Finding the Third Proportional to 12,645.56 and 18,216.56

Step by Step Solution

1. Step 1: Write the proportion equation
   12,645.56 : 18,216.56 = 18,216.56 : x
2. Step 2: Convert to fraction form
   12,645.56/18,216.56 = 18,216.56/x
3. Step 3: Cross multiply
   12,645.56x = 18,216.56 × 18,216.56
4. Step 4: Simplify right side
   12,645.56x = 331,843,149.32
5. Step 5: Solve for x
   x = 331,843,149.32/12,645.56
6. Step 6: Final answer
   x = 26,241.87