Finding the Third Proportional to 71,122.50 and 144,290.25

Step by Step Solution

1. Step 1: Write the proportion equation
   71,122.50 : 144,290.25 = 144,290.25 : x
2. Step 2: Convert to fraction form
   71,122.50/144,290.25 = 144,290.25/x
3. Step 3: Cross multiply
   71,122.50x = 144,290.25 × 144,290.25
4. Step 4: Simplify right side
   71,122.50x = 20,819,676,245.06
5. Step 5: Solve for x
   x = 20,819,676,245.06/71,122.50
6. Step 6: Final answer
   x = 292,729.81