Finding the Third Proportional to 14,289.75 and 31,231.69

Step by Step Solution

1. Step 1: Write the proportion equation
   14,289.75 : 31,231.69 = 31,231.69 : x
2. Step 2: Convert to fraction form
   14,289.75/31,231.69 = 31,231.69/x
3. Step 3: Cross multiply
   14,289.75x = 31,231.69 × 31,231.69
4. Step 4: Simplify right side
   14,289.75x = 975,418,304.10
5. Step 5: Solve for x
   x = 975,418,304.10/14,289.75
6. Step 6: Final answer
   x = 68,260.00