Finding the Third Proportional to 10,131.75 and 12,287.25

Step by Step Solution

1. Step 1: Write the proportion equation
   10,131.75 : 12,287.25 = 12,287.25 : x
2. Step 2: Convert to fraction form
   10,131.75/12,287.25 = 12,287.25/x
3. Step 3: Cross multiply
   10,131.75x = 12,287.25 × 12,287.25
4. Step 4: Simplify right side
   10,131.75x = 150,976,512.56
5. Step 5: Solve for x
   x = 150,976,512.56/10,131.75
6. Step 6: Final answer
   x = 14,901.33