Finding the Third Proportional to 3,485,691 and 5,280,701

Step by Step Solution

1. Step 1: Write the proportion equation
   3,485,691 : 5,280,701 = 5,280,701 : x
2. Step 2: Convert to fraction form
   3,485,691/5,280,701 = 5,280,701/x
3. Step 3: Cross multiply
   3,485,691x = 5,280,701 × 5,280,701
4. Step 4: Simplify right side
   3,485,691x = 27,885,803,051,401
5. Step 5: Solve for x
   x = 27,885,803,051,401/3,485,691
6. Step 6: Final answer
   x = 8,000,078.91