Finding the Third Proportional to 9,229.78 and 20,018.81

Step by Step Solution

1. Step 1: Write the proportion equation
   9,229.78 : 20,018.81 = 20,018.81 : x
2. Step 2: Convert to fraction form
   9,229.78/20,018.81 = 20,018.81/x
3. Step 3: Cross multiply
   9,229.78x = 20,018.81 × 20,018.81
4. Step 4: Simplify right side
   9,229.78x = 400,752,853.91
5. Step 5: Solve for x
   x = 400,752,853.91/9,229.78
6. Step 6: Final answer
   x = 43,419.54