Finding the Third Proportional to 642,341 and 1,383,340

Step by Step Solution

1. Step 1: Write the proportion equation
   642,341 : 1,383,340 = 1,383,340 : x
2. Step 2: Convert to fraction form
   642,341/1,383,340 = 1,383,340/x
3. Step 3: Cross multiply
   642,341x = 1,383,340 × 1,383,340
4. Step 4: Simplify right side
   642,341x = 1,913,629,555,600
5. Step 5: Solve for x
   x = 1,913,629,555,600/642,341
6. Step 6: Final answer
   x = 2,979,149.01