Finding the Third Proportional to 60,419.25 and 128,614.50

Step by Step Solution

1. Step 1: Write the proportion equation
   60,419.25 : 128,614.50 = 128,614.50 : x
2. Step 2: Convert to fraction form
   60,419.25/128,614.50 = 128,614.50/x
3. Step 3: Cross multiply
   60,419.25x = 128,614.50 × 128,614.50
4. Step 4: Simplify right side
   60,419.25x = 16,541,689,610.25
5. Step 5: Solve for x
   x = 16,541,689,610.25/60,419.25
6. Step 6: Final answer
   x = 273,781.78