Finding the Third Proportional to 681,684 and 1,036,689

Step by Step Solution

1. Step 1: Write the proportion equation
   681,684 : 1,036,689 = 1,036,689 : x
2. Step 2: Convert to fraction form
   681,684/1,036,689 = 1,036,689/x
3. Step 3: Cross multiply
   681,684x = 1,036,689 × 1,036,689
4. Step 4: Simplify right side
   681,684x = 1,074,724,082,721
5. Step 5: Solve for x
   x = 1,074,724,082,721/681,684
6. Step 6: Final answer
   x = 1,576,572.26