Finding the Third Proportional to 3,920,919 and 8,493,222

Step by Step Solution

1. Step 1: Write the proportion equation
   3,920,919 : 8,493,222 = 8,493,222 : x
2. Step 2: Convert to fraction form
   3,920,919/8,493,222 = 8,493,222/x
3. Step 3: Cross multiply
   3,920,919x = 8,493,222 × 8,493,222
4. Step 4: Simplify right side
   3,920,919x = 72,134,819,941,284
5. Step 5: Solve for x
   x = 72,134,819,941,284/3,920,919
6. Step 6: Final answer
   x = 18,397,426.71