Finding the Third Proportional to 8,321.06 and 18,111.47

Step by Step Solution

1. Step 1: Write the proportion equation
   8,321.06 : 18,111.47 = 18,111.47 : x
2. Step 2: Convert to fraction form
   8,321.06/18,111.47 = 18,111.47/x
3. Step 3: Cross multiply
   8,321.06x = 18,111.47 × 18,111.47
4. Step 4: Simplify right side
   8,321.06x = 328,025,300.28
5. Step 5: Solve for x
   x = 328,025,300.28/8,321.06
6. Step 6: Final answer
   x = 39,421.08