Finding the Third Proportional to 59,480.25 and 128,245.50

Step by Step Solution

1. Step 1: Write the proportion equation
   59,480.25 : 128,245.50 = 128,245.50 : x
2. Step 2: Convert to fraction form
   59,480.25/128,245.50 = 128,245.50/x
3. Step 3: Cross multiply
   59,480.25x = 128,245.50 × 128,245.50
4. Step 4: Simplify right side
   59,480.25x = 16,446,908,270.25
5. Step 5: Solve for x
   x = 16,446,908,270.25/59,480.25
6. Step 6: Final answer
   x = 276,510.41