Finding the Third Proportional to 59,716.50 and 128,757

Step by Step Solution

1. Step 1: Write the proportion equation
   59,716.50 : 128,757 = 128,757 : x
2. Step 2: Convert to fraction form
   59,716.50/128,757 = 128,757/x
3. Step 3: Cross multiply
   59,716.50x = 128,757 × 128,757
4. Step 4: Simplify right side
   59,716.50x = 16,578,365,049
5. Step 5: Solve for x
   x = 16,578,365,049/59,716.50
6. Step 6: Final answer
   x = 277,617.83