Finding the Third Proportional to 59,104.31 and 128,255.16

Step by Step Solution

1. Step 1: Write the proportion equation
   59,104.31 : 128,255.16 = 128,255.16 : x
2. Step 2: Convert to fraction form
   59,104.31/128,255.16 = 128,255.16/x
3. Step 3: Cross multiply
   59,104.31x = 128,255.16 × 128,255.16
4. Step 4: Simplify right side
   59,104.31x = 16,449,385,104.71
5. Step 5: Solve for x
   x = 16,449,385,104.71/59,104.31
6. Step 6: Final answer
   x = 278,311.08