Answer
28985 mi
Work Step by Step
Write the list in sorted order and find the item(s) in the center of the list.
$21612\ mi, 25740\ mi, \underset\uparrow25810\ mi, \underset\uparrow32160\ mi, 35424\ mi, 41005\ mi$
Since this set contains an even number of items, find the mean of the 2 center items to determine the median.
$\frac{25810+32160}{2}=\frac{57970}{2}=28985$
