Finding the Third Proportional to 642,057 and 995,545.50

Step by Step Solution

1. Step 1: Write the proportion equation
   642,057 : 995,545.50 = 995,545.50 : x
2. Step 2: Convert to fraction form
   642,057/995,545.50 = 995,545.50/x
3. Step 3: Cross multiply
   642,057x = 995,545.50 × 995,545.50
4. Step 4: Simplify right side
   642,057x = 991,110,842,570.25
5. Step 5: Solve for x
   x = 991,110,842,570.25/642,057
6. Step 6: Final answer
   x = 1,543,649.31