How to Convert Word to PDF and Keep Page Size the Same

The Problem: A document in Microsoft Word has a certain custom page size, but when converted to Adobe PDF using the “Convert to Adobe PDF” command, the page size is ignored and the resulting document is a traditional letter size.

To convert to Adobe PDF, you right-click on the file name for the Microsoft Word document, then choose the “Convert to Adobe PDF” command.

The Question: How do I convert a Microsoft Word document to Adobe PDF without losing the custom page size?

Note that the following...