Finding the Third Proportional to 635,429.50 and 990,657

Step by Step Solution

1. Step 1: Write the proportion equation
   635,429.50 : 990,657 = 990,657 : x
2. Step 2: Convert to fraction form
   635,429.50/990,657 = 990,657/x
3. Step 3: Cross multiply
   635,429.50x = 990,657 × 990,657
4. Step 4: Simplify right side
   635,429.50x = 981,401,291,649
5. Step 5: Solve for x
   x = 981,401,291,649/635,429.50
6. Step 6: Final answer
   x = 1,544,469.20