Finding the Third Proportional to 8,790.71 and 17,940.23

Step by Step Solution

1. Step 1: Write the proportion equation
   8,790.71 : 17,940.23 = 17,940.23 : x
2. Step 2: Convert to fraction form
   8,790.71/17,940.23 = 17,940.23/x
3. Step 3: Cross multiply
   8,790.71x = 17,940.23 × 17,940.23
4. Step 4: Simplify right side
   8,790.71x = 321,852,009.43
5. Step 5: Solve for x
   x = 321,852,009.43/8,790.71
6. Step 6: Final answer
   x = 36,612.72