Finding the Third Proportional to 71,311.50 and 144,589.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,311.50 : 144,589.50 = 144,589.50 : x
2. Step 2: Convert to fraction form
   71,311.50/144,589.50 = 144,589.50/x
3. Step 3: Cross multiply
   71,311.50x = 144,589.50 × 144,589.50
4. Step 4: Simplify right side
   71,311.50x = 20,906,123,510.25
5. Step 5: Solve for x
   x = 20,906,123,510.25/71,311.50
6. Step 6: Final answer
   x = 293,166.23