Finding the Third Proportional to 10,042.31 and 20,545.31

Step by Step Solution

1. Step 1: Write the proportion equation
   10,042.31 : 20,545.31 = 20,545.31 : x
2. Step 2: Convert to fraction form
   10,042.31/20,545.31 = 20,545.31/x
3. Step 3: Cross multiply
   10,042.31x = 20,545.31 × 20,545.31
4. Step 4: Simplify right side
   10,042.31x = 422,109,865.72
5. Step 5: Solve for x
   x = 422,109,865.72/10,042.31
6. Step 6: Final answer
   x = 42,033.13