Finding the Third Proportional to 3,485,679 and 5,280,683

Step by Step Solution

1. Step 1: Write the proportion equation
   3,485,679 : 5,280,683 = 5,280,683 : x
2. Step 2: Convert to fraction form
   3,485,679/5,280,683 = 5,280,683/x
3. Step 3: Cross multiply
   3,485,679x = 5,280,683 × 5,280,683
4. Step 4: Simplify right side
   3,485,679x = 27,885,612,946,489
5. Step 5: Solve for x
   x = 27,885,612,946,489/3,485,679
6. Step 6: Final answer
   x = 8,000,051.91