Finding the Third Proportional to 60,097.50 and 128,239.31

Step by Step Solution

1. Step 1: Write the proportion equation
   60,097.50 : 128,239.31 = 128,239.31 : x
2. Step 2: Convert to fraction form
   60,097.50/128,239.31 = 128,239.31/x
3. Step 3: Cross multiply
   60,097.50x = 128,239.31 × 128,239.31
4. Step 4: Simplify right side
   60,097.50x = 16,445,321,270.47
5. Step 5: Solve for x
   x = 16,445,321,270.47/60,097.50
6. Step 6: Final answer
   x = 273,644.02