Finding the Third Proportional to 3,660,280 and 5,280,404

Step by Step Solution

1. Step 1: Write the proportion equation
   3,660,280 : 5,280,404 = 5,280,404 : x
2. Step 2: Convert to fraction form
   3,660,280/5,280,404 = 5,280,404/x
3. Step 3: Cross multiply
   3,660,280x = 5,280,404 × 5,280,404
4. Step 4: Simplify right side
   3,660,280x = 27,882,666,403,216
5. Step 5: Solve for x
   x = 27,882,666,403,216/3,660,280
6. Step 6: Final answer
   x = 7,617,632.09