Finding the Third Proportional to 3,485,653 and 5,280,644

Step by Step Solution

1. Step 1: Write the proportion equation
   3,485,653 : 5,280,644 = 5,280,644 : x
2. Step 2: Convert to fraction form
   3,485,653/5,280,644 = 5,280,644/x
3. Step 3: Cross multiply
   3,485,653x = 5,280,644 × 5,280,644
4. Step 4: Simplify right side
   3,485,653x = 27,885,201,054,736
5. Step 5: Solve for x
   x = 27,885,201,054,736/3,485,653
6. Step 6: Final answer
   x = 7,999,993.42