Finding the Third Proportional to 3,858,629 and 8,381,530

Step by Step Solution

1. Step 1: Write the proportion equation
   3,858,629 : 8,381,530 = 8,381,530 : x
2. Step 2: Convert to fraction form
   3,858,629/8,381,530 = 8,381,530/x
3. Step 3: Cross multiply
   3,858,629x = 8,381,530 × 8,381,530
4. Step 4: Simplify right side
   3,858,629x = 70,250,045,140,900
5. Step 5: Solve for x
   x = 70,250,045,140,900/3,858,629
6. Step 6: Final answer
   x = 18,205,959.98