Finding the Third Proportional to 641,418 and 1,384,530

Step by Step Solution

1. Step 1: Write the proportion equation
   641,418 : 1,384,530 = 1,384,530 : x
2. Step 2: Convert to fraction form
   641,418/1,384,530 = 1,384,530/x
3. Step 3: Cross multiply
   641,418x = 1,384,530 × 1,384,530
4. Step 4: Simplify right side
   641,418x = 1,916,923,320,900
5. Step 5: Solve for x
   x = 1,916,923,320,900/641,418
6. Step 6: Final answer
   x = 2,988,571.14