Finding the Third Proportional to 3,806,138 and 8,206,436

Step by Step Solution

1. Step 1: Write the proportion equation
   3,806,138 : 8,206,436 = 8,206,436 : x
2. Step 2: Convert to fraction form
   3,806,138/8,206,436 = 8,206,436/x
3. Step 3: Cross multiply
   3,806,138x = 8,206,436 × 8,206,436
4. Step 4: Simplify right side
   3,806,138x = 67,345,591,822,096
5. Step 5: Solve for x
   x = 67,345,591,822,096/3,806,138
6. Step 6: Final answer
   x = 17,693,943.79