Finding the Third Proportional to 3,485,688 and 5,280,697

Step by Step Solution

1. Step 1: Write the proportion equation
   3,485,688 : 5,280,697 = 5,280,697 : x
2. Step 2: Convert to fraction form
   3,485,688/5,280,697 = 5,280,697/x
3. Step 3: Cross multiply
   3,485,688x = 5,280,697 × 5,280,697
4. Step 4: Simplify right side
   3,485,688x = 27,885,760,805,809
5. Step 5: Solve for x
   x = 27,885,760,805,809/3,485,688
6. Step 6: Final answer
   x = 8,000,073.67