Finding the Third Proportional to 3,660,220 and 5,280,354

Step by Step Solution

1. Step 1: Write the proportion equation
   3,660,220 : 5,280,354 = 5,280,354 : x
2. Step 2: Convert to fraction form
   3,660,220/5,280,354 = 5,280,354/x
3. Step 3: Cross multiply
   3,660,220x = 5,280,354 × 5,280,354
4. Step 4: Simplify right side
   3,660,220x = 27,882,138,365,316
5. Step 5: Solve for x
   x = 27,882,138,365,316/3,660,220
6. Step 6: Final answer
   x = 7,617,612.70