Finding the Third Proportional to 682,436 and 1,408,584

Step by Step Solution

1. Step 1: Write the proportion equation
   682,436 : 1,408,584 = 1,408,584 : x
2. Step 2: Convert to fraction form
   682,436/1,408,584 = 1,408,584/x
3. Step 3: Cross multiply
   682,436x = 1,408,584 × 1,408,584
4. Step 4: Simplify right side
   682,436x = 1,984,108,885,056
5. Step 5: Solve for x
   x = 1,984,108,885,056/682,436
6. Step 6: Final answer
   x = 2,907,391.88