Finding the Third Proportional to 13,455.56 and 18,471.09

Step by Step Solution

1. Step 1: Write the proportion equation
   13,455.56 : 18,471.09 = 18,471.09 : x
2. Step 2: Convert to fraction form
   13,455.56/18,471.09 = 18,471.09/x
3. Step 3: Cross multiply
   13,455.56x = 18,471.09 × 18,471.09
4. Step 4: Simplify right side
   13,455.56x = 341,181,304.32
5. Step 5: Solve for x
   x = 341,181,304.32/13,455.56
6. Step 6: Final answer
   x = 25,356.15