Finding the Third Proportional to 676,446 and 1,408,865

Step by Step Solution

1. Step 1: Write the proportion equation
   676,446 : 1,408,865 = 1,408,865 : x
2. Step 2: Convert to fraction form
   676,446/1,408,865 = 1,408,865/x
3. Step 3: Cross multiply
   676,446x = 1,408,865 × 1,408,865
4. Step 4: Simplify right side
   676,446x = 1,984,900,588,225
5. Step 5: Solve for x
   x = 1,984,900,588,225/676,446
6. Step 6: Final answer
   x = 2,934,307.53