Answer:
30.
Step-by-step explanation:
first term = a
3r term = ar^2
So here ar^2/ a = r^2
r^2 = 5/180 = 1/36
r = 1/6
So missing term = 180 * 1/6 = 30.
$30
100,000,000 is 100 million
10,000,000 is 10 milllion
3 x 3 =9
9