Finding the Third Proportional to 12,615.75 and 18,007.31

Step by Step Solution

1. Step 1: Write the proportion equation
   12,615.75 : 18,007.31 = 18,007.31 : x
2. Step 2: Convert to fraction form
   12,615.75/18,007.31 = 18,007.31/x
3. Step 3: Cross multiply
   12,615.75x = 18,007.31 × 18,007.31
4. Step 4: Simplify right side
   12,615.75x = 324,263,303.47
5. Step 5: Solve for x
   x = 324,263,303.47/12,615.75
6. Step 6: Final answer
   x = 25,703.05