Finding the Third Proportional to 60,811.50 and 130,612.50

Step by Step Solution

1. Step 1: Write the proportion equation
   60,811.50 : 130,612.50 = 130,612.50 : x
2. Step 2: Convert to fraction form
   60,811.50/130,612.50 = 130,612.50/x
3. Step 3: Cross multiply
   60,811.50x = 130,612.50 × 130,612.50
4. Step 4: Simplify right side
   60,811.50x = 17,059,625,156.25
5. Step 5: Solve for x
   x = 17,059,625,156.25/60,811.50
6. Step 6: Final answer
   x = 280,532.88