Finding the Third Proportional to 20,330.25 and 31,287.75

Step by Step Solution

1. Step 1: Write the proportion equation
   20,330.25 : 31,287.75 = 31,287.75 : x
2. Step 2: Convert to fraction form
   20,330.25/31,287.75 = 31,287.75/x
3. Step 3: Cross multiply
   20,330.25x = 31,287.75 × 31,287.75
4. Step 4: Simplify right side
   20,330.25x = 978,923,300.06
5. Step 5: Solve for x
   x = 978,923,300.06/20,330.25
6. Step 6: Final answer
   x = 48,151.07