Finding the Third Proportional to 59,990.25 and 131,280.25

Step by Step Solution

1. Step 1: Write the proportion equation
   59,990.25 : 131,280.25 = 131,280.25 : x
2. Step 2: Convert to fraction form
   59,990.25/131,280.25 = 131,280.25/x
3. Step 3: Cross multiply
   59,990.25x = 131,280.25 × 131,280.25
4. Step 4: Simplify right side
   59,990.25x = 17,234,504,040.06
5. Step 5: Solve for x
   x = 17,234,504,040.06/59,990.25
6. Step 6: Final answer
   x = 287,288.42