Finding the Third Proportional to 3,660,272 and 5,280,392

Step by Step Solution

1. Step 1: Write the proportion equation
   3,660,272 : 5,280,392 = 5,280,392 : x
2. Step 2: Convert to fraction form
   3,660,272/5,280,392 = 5,280,392/x
3. Step 3: Cross multiply
   3,660,272x = 5,280,392 × 5,280,392
4. Step 4: Simplify right side
   3,660,272x = 27,882,539,673,664
5. Step 5: Solve for x
   x = 27,882,539,673,664/3,660,272
6. Step 6: Final answer
   x = 7,617,614.12