Finding the Third Proportional to 18,655.31 and 40,557.38

Step by Step Solution

1. Step 1: Write the proportion equation
   18,655.31 : 40,557.38 = 40,557.38 : x
2. Step 2: Convert to fraction form
   18,655.31/40,557.38 = 40,557.38/x
3. Step 3: Cross multiply
   18,655.31x = 40,557.38 × 40,557.38
4. Step 4: Simplify right side
   18,655.31x = 1,644,900,666.89
5. Step 5: Solve for x
   x = 1,644,900,666.89/18,655.31
6. Step 6: Final answer
   x = 88,173.31