An index had an average (geometric) mean return over 20 years of 3.8861%. If the beginning index value was 100, what was the final index value after 20 years?

eBay, Inc., went public in September of 1998. The following information on shares outstanding was listed in the final prospectus filed with the SEC.
In the IPO, eBay issued 3,500,000 new shares. The initial price to the public was $18.00 per share. The final first day closing price was $44.88.