Finding the Third Proportional to 20,118.38 and 28,243.69

Step by Step Solution

1. Step 1: Write the proportion equation
   20,118.38 : 28,243.69 = 28,243.69 : x
2. Step 2: Convert to fraction form
   20,118.38/28,243.69 = 28,243.69/x
3. Step 3: Cross multiply
   20,118.38x = 28,243.69 × 28,243.69
4. Step 4: Simplify right side
   20,118.38x = 797,705,883.60
5. Step 5: Solve for x
   x = 797,705,883.60/20,118.38
6. Step 6: Final answer
   x = 39,650.61