I saw this on https://discussions.apple.com/thread/4537649?tstart=0
I don't even have an Apple computer, so no idea if this is helpful...
In the Applications Icon on the Dock, open your Utilities File and click on "Keychain Access." After it opens and in the far left column under "Category," click on "...Passwords." If they are not Alphabetized already, click "NAME" at the top of the column it will alphabetize all the Passwords Names. Find "Password.pages," click on and it will bring up the "ATTRIBUTES/ACCESS CONTROL" and click the "SHOW PASSWORD" box. Enter the System Password and it will show you the password.