Finding the Third Proportional to 71,132.50 and 148,840.50

Step by Step Solution

1. Step 1: Write the proportion equation
   71,132.50 : 148,840.50 = 148,840.50 : x
2. Step 2: Convert to fraction form
   71,132.50/148,840.50 = 148,840.50/x
3. Step 3: Cross multiply
   71,132.50x = 148,840.50 × 148,840.50
4. Step 4: Simplify right side
   71,132.50x = 22,153,494,440.25
5. Step 5: Solve for x
   x = 22,153,494,440.25/71,132.50
6. Step 6: Final answer
   x = 311,439.84