Finding the Third Proportional to 71,478.50 and 155,406.88

Step by Step Solution

1. Step 1: Write the proportion equation
   71,478.50 : 155,406.88 = 155,406.88 : x
2. Step 2: Convert to fraction form
   71,478.50/155,406.88 = 155,406.88/x
3. Step 3: Cross multiply
   71,478.50x = 155,406.88 × 155,406.88
4. Step 4: Simplify right side
   71,478.50x = 24,151,296,797.27
5. Step 5: Solve for x
   x = 24,151,296,797.27/71,478.50
6. Step 6: Final answer
   x = 337,881.98