Finding the Third Proportional to 66,526.50 and 142,895.50

Step by Step Solution

1. Step 1: Write the proportion equation
   66,526.50 : 142,895.50 = 142,895.50 : x
2. Step 2: Convert to fraction form
   66,526.50/142,895.50 = 142,895.50/x
3. Step 3: Cross multiply
   66,526.50x = 142,895.50 × 142,895.50
4. Step 4: Simplify right side
   66,526.50x = 20,419,123,920.25
5. Step 5: Solve for x
   x = 20,419,123,920.25/66,526.50
6. Step 6: Final answer
   x = 306,932.18