Word for "item after next"

When I was making a PowerPoint presentation I was directing the reader to the slide after the next one when I realised it sounded incredibly clunky and if there was a specific word for that concept, in the vein of penultimate. This could also be used for items in a list. Example sentence:

To discover how I coded this program please consult the _______ slide.

Solution 1:

On a different forum someone offered "Postproximate" in response to a similar request. The word doesn't exist right now, but hey, you never know, it might catch on.

Solution 2:

"Subsequent" means "to follow" and is commonly used in cases like your example:

"To discover how I coded this program please consult the subsequent slide."

Definition and origin from MW-O:

"following in time, order, or place"

• subsequent events
• a subsequent clause in the treaty

Origin of SUBSEQUENT

Middle English, from Anglo-French, from Latin subsequent-, subsequens, present participle of subsequi to follow close, from sub- near + sequi to follow — more at sub-, sue First Known Use: 15th century