Finding the Third Proportional to 1,002,446 and 2,161,378

Step by Step Solution

1. Step 1: Write the proportion equation
   1,002,446 : 2,161,378 = 2,161,378 : x
2. Step 2: Convert to fraction form
   1,002,446/2,161,378 = 2,161,378/x
3. Step 3: Cross multiply
   1,002,446x = 2,161,378 × 2,161,378
4. Step 4: Simplify right side
   1,002,446x = 4,671,554,858,884
5. Step 5: Solve for x
   x = 4,671,554,858,884/1,002,446
6. Step 6: Final answer
   x = 4,660,156.12