Finding the Third Proportional to 3,485,655 and 5,280,647

Step by Step Solution

1. Step 1: Write the proportion equation
   3,485,655 : 5,280,647 = 5,280,647 : x
2. Step 2: Convert to fraction form
   3,485,655/5,280,647 = 5,280,647/x
3. Step 3: Cross multiply
   3,485,655x = 5,280,647 × 5,280,647
4. Step 4: Simplify right side
   3,485,655x = 27,885,232,738,609
5. Step 5: Solve for x
   x = 27,885,232,738,609/3,485,655
6. Step 6: Final answer
   x = 7,999,997.92