Change image to 2500 pixels on the longest side

I posted earlier but just found out how to change my dpi in an image from 300 to 72 dpi. (Can't find my earlier post.)
Now I'd like to, if possible,, In order to publish this is as a book cover on Kindle, change the number of pixels on the longest side of the image to the recommended 2500 Pixels.(Right now the image I'm interested in Is a bit more than that on the longest side.).

Go to image>resize>image resize. It would launch a image resize dialog.
From the bottom of the dialog, choose "Resample Image". in the drop-down below, you can choose the algorithm for resampling. Since you said the image you are interested in is a bit larger than 2500, you should choose Bicubic Sharper. To know more about resampling algorithms, check the link https://helpx.adobe.com/photoshop-elements/using/resizing.html#resample_an_image
As soon as you choose the "resample image" option, it would enable the pixel dimension area of the dialog.
change height(or width) to 2500 depending upon which side is the longest side.
click ok

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Destination - browse to and select the empty computer desktop folder
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If you discovered that your current TV DVD player can be set for a 16:9 display, then I have a preferred workflow for
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Please review and consider. Thanks for the follow ups.
ATR

Change image to 2500 pixels on the longest side

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