Finding the Third Proportional to 678,988 and 1,413,742

Step by Step Solution

1. Step 1: Write the proportion equation
   678,988 : 1,413,742 = 1,413,742 : x
2. Step 2: Convert to fraction form
   678,988/1,413,742 = 1,413,742/x
3. Step 3: Cross multiply
   678,988x = 1,413,742 × 1,413,742
4. Step 4: Simplify right side
   678,988x = 1,998,666,442,564
5. Step 5: Solve for x
   x = 1,998,666,442,564/678,988
6. Step 6: Final answer
   x = 2,943,596.12