Finding the Third Proportional to 18,354.13 and 39,108.81

Step by Step Solution

1. Step 1: Write the proportion equation
   18,354.13 : 39,108.81 = 39,108.81 : x
2. Step 2: Convert to fraction form
   18,354.13/39,108.81 = 39,108.81/x
3. Step 3: Cross multiply
   18,354.13x = 39,108.81 × 39,108.81
4. Step 4: Simplify right side
   18,354.13x = 1,529,499,215.16
5. Step 5: Solve for x
   x = 1,529,499,215.16/18,354.13
6. Step 6: Final answer
   x = 83,332.72