A company had sales of $19,808 million in 1999 and $28,858 million in 2007. Use the Midpoint Formula

A company had sales of $19,808 million in 1999 and $28,858 million in 2007. Use the Midpoint Formula to estimate the sales in 2003

2003 is the midpoint of 1999 and 2007, so we use our midpoint calculator to get:
24,333 sales in 2003