Finding the Third Proportional to 5,338,645 and 8,273,378

Step by Step Solution

1. Step 1: Write the proportion equation
   5,338,645 : 8,273,378 = 8,273,378 : x
2. Step 2: Convert to fraction form
   5,338,645/8,273,378 = 8,273,378/x
3. Step 3: Cross multiply
   5,338,645x = 8,273,378 × 8,273,378
4. Step 4: Simplify right side
   5,338,645x = 68,448,783,530,884
5. Step 5: Solve for x
   x = 68,448,783,530,884/5,338,645
6. Step 6: Final answer
   x = 12,821,377.62