Finding the Third Proportional to 1,839,728 and 4,021,456

Step by Step Solution

1. Step 1: Write the proportion equation
   1,839,728 : 4,021,456 = 4,021,456 : x
2. Step 2: Convert to fraction form
   1,839,728/4,021,456 = 4,021,456/x
3. Step 3: Cross multiply
   1,839,728x = 4,021,456 × 4,021,456
4. Step 4: Simplify right side
   1,839,728x = 16,172,108,359,936
5. Step 5: Solve for x
   x = 16,172,108,359,936/1,839,728
6. Step 6: Final answer
   x = 8,790,488.79