Finding the Third Proportional to 59,976 and 128,256.50

Step by Step Solution

1. Step 1: Write the proportion equation
   59,976 : 128,256.50 = 128,256.50 : x
2. Step 2: Convert to fraction form
   59,976/128,256.50 = 128,256.50/x
3. Step 3: Cross multiply
   59,976x = 128,256.50 × 128,256.50
4. Step 4: Simplify right side
   59,976x = 16,449,729,792.25
5. Step 5: Solve for x
   x = 16,449,729,792.25/59,976
6. Step 6: Final answer
   x = 274,271.87