Finding the Third Proportional to 59,663.25 and 128,469.38

Step by Step Solution

1. Step 1: Write the proportion equation
   59,663.25 : 128,469.38 = 128,469.38 : x
2. Step 2: Convert to fraction form
   59,663.25/128,469.38 = 128,469.38/x
3. Step 3: Cross multiply
   59,663.25x = 128,469.38 × 128,469.38
4. Step 4: Simplify right side
   59,663.25x = 16,504,380,312.89
5. Step 5: Solve for x
   x = 16,504,380,312.89/59,663.25
6. Step 6: Final answer
   x = 276,625.57