Finding the Third Proportional to 676,451 and 1,408,870

Step by Step Solution

1. Step 1: Write the proportion equation
   676,451 : 1,408,870 = 1,408,870 : x
2. Step 2: Convert to fraction form
   676,451/1,408,870 = 1,408,870/x
3. Step 3: Cross multiply
   676,451x = 1,408,870 × 1,408,870
4. Step 4: Simplify right side
   676,451x = 1,984,914,676,900
5. Step 5: Solve for x
   x = 1,984,914,676,900/676,451
6. Step 6: Final answer
   x = 2,934,306.66