Finding the Third Proportional to 3,864,006 and 8,391,726

Step by Step Solution

1. Step 1: Write the proportion equation
   3,864,006 : 8,391,726 = 8,391,726 : x
2. Step 2: Convert to fraction form
   3,864,006/8,391,726 = 8,391,726/x
3. Step 3: Cross multiply
   3,864,006x = 8,391,726 × 8,391,726
4. Step 4: Simplify right side
   3,864,006x = 70,421,065,259,076
5. Step 5: Solve for x
   x = 70,421,065,259,076/3,864,006
6. Step 6: Final answer
   x = 18,224,885.07