Finding the Third Proportional to 424,631 and 1,000,989

Step by Step Solution

1. Step 1: Write the proportion equation
   424,631 : 1,000,989 = 1,000,989 : x
2. Step 2: Convert to fraction form
   424,631/1,000,989 = 1,000,989/x
3. Step 3: Cross multiply
   424,631x = 1,000,989 × 1,000,989
4. Step 4: Simplify right side
   424,631x = 1,001,978,978,121
5. Step 5: Solve for x
   x = 1,001,978,978,121/424,631
6. Step 6: Final answer
   x = 2,359,646.32