Finding the Third Proportional to 12,924.56 and 14,139.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,924.56 : 14,139.56 = 14,139.56 : x
2. Step 2: Convert to fraction form
   12,924.56/14,139.56 = 14,139.56/x
3. Step 3: Cross multiply
   12,924.56x = 14,139.56 × 14,139.56
4. Step 4: Simplify right side
   12,924.56x = 199,927,227.69
5. Step 5: Solve for x
   x = 199,927,227.69/12,924.56
6. Step 6: Final answer
   x = 15,468.78