Finding the Third Proportional to 31,063.50 and 66,480.75

Step by Step Solution

1. Step 1: Write the proportion equation
   31,063.50 : 66,480.75 = 66,480.75 : x
2. Step 2: Convert to fraction form
   31,063.50/66,480.75 = 66,480.75/x
3. Step 3: Cross multiply
   31,063.50x = 66,480.75 × 66,480.75
4. Step 4: Simplify right side
   31,063.50x = 4,419,690,120.56
5. Step 5: Solve for x
   x = 4,419,690,120.56/31,063.50
6. Step 6: Final answer
   x = 142,279.21