Finding the Third Proportional to 59,785.50 and 128,157

Step by Step Solution

1. Step 1: Write the proportion equation
   59,785.50 : 128,157 = 128,157 : x
2. Step 2: Convert to fraction form
   59,785.50/128,157 = 128,157/x
3. Step 3: Cross multiply
   59,785.50x = 128,157 × 128,157
4. Step 4: Simplify right side
   59,785.50x = 16,424,216,649
5. Step 5: Solve for x
   x = 16,424,216,649/59,785.50
6. Step 6: Final answer
   x = 274,719.06