Finding the Third Proportional to 66,470.50 and 144,605

Step by Step Solution

1. Step 1: Write the proportion equation
   66,470.50 : 144,605 = 144,605 : x
2. Step 2: Convert to fraction form
   66,470.50/144,605 = 144,605/x
3. Step 3: Cross multiply
   66,470.50x = 144,605 × 144,605
4. Step 4: Simplify right side
   66,470.50x = 20,910,606,025
5. Step 5: Solve for x
   x = 20,910,606,025/66,470.50
6. Step 6: Final answer
   x = 314,584.76