Finding the Third Proportional to 5,615,682 and 8,212,915

Step by Step Solution

1. Step 1: Write the proportion equation
   5,615,682 : 8,212,915 = 8,212,915 : x
2. Step 2: Convert to fraction form
   5,615,682/8,212,915 = 8,212,915/x
3. Step 3: Cross multiply
   5,615,682x = 8,212,915 × 8,212,915
4. Step 4: Simplify right side
   5,615,682x = 67,451,972,797,225
5. Step 5: Solve for x
   x = 67,451,972,797,225/5,615,682
6. Step 6: Final answer
   x = 12,011,359.05