Finding the Third Proportional to 4,212,200 and 8,214,448

Step by Step Solution

1. Step 1: Write the proportion equation
   4,212,200 : 8,214,448 = 8,214,448 : x
2. Step 2: Convert to fraction form
   4,212,200/8,214,448 = 8,214,448/x
3. Step 3: Cross multiply
   4,212,200x = 8,214,448 × 8,214,448
4. Step 4: Simplify right side
   4,212,200x = 67,477,155,944,704
5. Step 5: Solve for x
   x = 67,477,155,944,704/4,212,200
6. Step 6: Final answer
   x = 16,019,456.80