Sentence with "auto" possessive

Consider the following English sentence:

I explained John's and Arthur's progress.

What would be the best (i.e. more elegant) way to change it if, instead of Arthur (or John), the 2nd person was myself? I was thinking of "I explained John's and my progress" but it just doesn't sound right to me ( I am a non-native English speaker).

Answer

"I explained John's progress and my progress" would be the best way to avoid any confusion about whether you are speaking about joint progress or individual progress.

See http://www.chicagomanualofstyle.org/qanda/data/faq/topics/PossessivesandAttributives/faq0032.html