Finding the Third Proportional to 445,990 and 635,766

Step by Step Solution

1. Step 1: Write the proportion equation
   445,990 : 635,766 = 635,766 : x
2. Step 2: Convert to fraction form
   445,990/635,766 = 635,766/x
3. Step 3: Cross multiply
   445,990x = 635,766 × 635,766
4. Step 4: Simplify right side
   445,990x = 404,198,406,756
5. Step 5: Solve for x
   x = 404,198,406,756/445,990
6. Step 6: Final answer
   x = 906,294.78