Answer
$\$40560.5$ million
Work Step by Step
The formula for midpoint is
$\left(\frac{x_{1}+x_{2}}{2}, \frac{y_{1}+y_{2}}{2}\right)=midpoint$
$\left(\frac{2010+2014}{2}, \frac{35123+45998}{2}\right)=(2012, 40560.5)$
Therefore, the sales in $2012$ is $\$40560.5$ million.