Finding the Third Proportional to 71,131.50 and 155,385

Step by Step Solution

1. Step 1: Write the proportion equation
   71,131.50 : 155,385 = 155,385 : x
2. Step 2: Convert to fraction form
   71,131.50/155,385 = 155,385/x
3. Step 3: Cross multiply
   71,131.50x = 155,385 × 155,385
4. Step 4: Simplify right side
   71,131.50x = 24,144,498,225
5. Step 5: Solve for x
   x = 24,144,498,225/71,131.50
6. Step 6: Final answer
   x = 339,434.68