Finding the Third Proportional to 1,820,021 and 3,919,114

Step by Step Solution

1. Step 1: Write the proportion equation
   1,820,021 : 3,919,114 = 3,919,114 : x
2. Step 2: Convert to fraction form
   1,820,021/3,919,114 = 3,919,114/x
3. Step 3: Cross multiply
   1,820,021x = 3,919,114 × 3,919,114
4. Step 4: Simplify right side
   1,820,021x = 15,359,454,544,996
5. Step 5: Solve for x
   x = 15,359,454,544,996/1,820,021
6. Step 6: Final answer
   x = 8,439,163.36