Finding the Third Proportional to 59,767.50 and 128,756.25

Step by Step Solution

1. Step 1: Write the proportion equation
   59,767.50 : 128,756.25 = 128,756.25 : x
2. Step 2: Convert to fraction form
   59,767.50/128,756.25 = 128,756.25/x
3. Step 3: Cross multiply
   59,767.50x = 128,756.25 × 128,756.25
4. Step 4: Simplify right side
   59,767.50x = 16,578,171,914.06
5. Step 5: Solve for x
   x = 16,578,171,914.06/59,767.50
6. Step 6: Final answer
   x = 277,377.70