Finding the Third Proportional to 9,122.20 and 19,743.71

Step by Step Solution

1. Step 1: Write the proportion equation
   9,122.20 : 19,743.71 = 19,743.71 : x
2. Step 2: Convert to fraction form
   9,122.20/19,743.71 = 19,743.71/x
3. Step 3: Cross multiply
   9,122.20x = 19,743.71 × 19,743.71
4. Step 4: Simplify right side
   9,122.20x = 389,814,275.83
5. Step 5: Solve for x
   x = 389,814,275.83/9,122.20
6. Step 6: Final answer
   x = 42,732.47