Finding the Third Proportional to 13,151.25 and 31,443.75

Step by Step Solution

1. Step 1: Write the proportion equation
   13,151.25 : 31,443.75 = 31,443.75 : x
2. Step 2: Convert to fraction form
   13,151.25/31,443.75 = 31,443.75/x
3. Step 3: Cross multiply
   13,151.25x = 31,443.75 × 31,443.75
4. Step 4: Simplify right side
   13,151.25x = 988,709,414.06
5. Step 5: Solve for x
   x = 988,709,414.06/13,151.25
6. Step 6: Final answer
   x = 75,179.88