Finding the Third Proportional to 59,656.50 and 128,455.88

Step by Step Solution

1. Step 1: Write the proportion equation
   59,656.50 : 128,455.88 = 128,455.88 : x
2. Step 2: Convert to fraction form
   59,656.50/128,455.88 = 128,455.88/x
3. Step 3: Cross multiply
   59,656.50x = 128,455.88 × 128,455.88
4. Step 4: Simplify right side
   59,656.50x = 16,500,911,822.02
5. Step 5: Solve for x
   x = 16,500,911,822.02/59,656.50
6. Step 6: Final answer
   x = 276,598.72