Finding the Third Proportional to 9,957.30 and 21,661.17

Step by Step Solution

1. Step 1: Write the proportion equation
   9,957.30 : 21,661.17 = 21,661.17 : x
2. Step 2: Convert to fraction form
   9,957.30/21,661.17 = 21,661.17/x
3. Step 3: Cross multiply
   9,957.30x = 21,661.17 × 21,661.17
4. Step 4: Simplify right side
   9,957.30x = 469,206,367.00
5. Step 5: Solve for x
   x = 469,206,367.00/9,957.30
6. Step 6: Final answer
   x = 47,121.82