Finding the Third Proportional to 3,660,222 and 5,280,357

Step by Step Solution

1. Step 1: Write the proportion equation
   3,660,222 : 5,280,357 = 5,280,357 : x
2. Step 2: Convert to fraction form
   3,660,222/5,280,357 = 5,280,357/x
3. Step 3: Cross multiply
   3,660,222x = 5,280,357 × 5,280,357
4. Step 4: Simplify right side
   3,660,222x = 27,882,170,047,449
5. Step 5: Solve for x
   x = 27,882,170,047,449/3,660,222
6. Step 6: Final answer
   x = 7,617,617.20