Finding the Third Proportional to 18,499.31 and 39,954.56

Step by Step Solution

1. Step 1: Write the proportion equation
   18,499.31 : 39,954.56 = 39,954.56 : x
2. Step 2: Convert to fraction form
   18,499.31/39,954.56 = 39,954.56/x
3. Step 3: Cross multiply
   18,499.31x = 39,954.56 × 39,954.56
4. Step 4: Simplify right side
   18,499.31x = 1,596,367,064.57
5. Step 5: Solve for x
   x = 1,596,367,064.57/18,499.31
6. Step 6: Final answer
   x = 86,293.32