Finding the Third Proportional to 673,879.50 and 991,035

Step by Step Solution

1. Step 1: Write the proportion equation
   673,879.50 : 991,035 = 991,035 : x
2. Step 2: Convert to fraction form
   673,879.50/991,035 = 991,035/x
3. Step 3: Cross multiply
   673,879.50x = 991,035 × 991,035
4. Step 4: Simplify right side
   673,879.50x = 982,150,371,225
5. Step 5: Solve for x
   x = 982,150,371,225/673,879.50
6. Step 6: Final answer
   x = 1,457,456.97