Finding the Third Proportional to 71,509.50 and 155,320.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,509.50 : 155,320.50 = 155,320.50 : x
2. Step 2: Convert to fraction form
   71,509.50/155,320.50 = 155,320.50/x
3. Step 3: Cross multiply
   71,509.50x = 155,320.50 × 155,320.50
4. Step 4: Simplify right side
   71,509.50x = 24,124,457,720.25
5. Step 5: Solve for x
   x = 24,124,457,720.25/71,509.50
6. Step 6: Final answer
   x = 337,360.18