Finding the Third Proportional to 12,918.38 and 14,571.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,918.38 : 14,571.56 = 14,571.56 : x
2. Step 2: Convert to fraction form
   12,918.38/14,571.56 = 14,571.56/x
3. Step 3: Cross multiply
   12,918.38x = 14,571.56 × 14,571.56
4. Step 4: Simplify right side
   12,918.38x = 212,330,433.69
5. Step 5: Solve for x
   x = 212,330,433.69/12,918.38
6. Step 6: Final answer
   x = 16,436.31