Finding the Third Proportional to 642,334 and 1,383,326

Step by Step Solution

1. Step 1: Write the proportion equation
   642,334 : 1,383,326 = 1,383,326 : x
2. Step 2: Convert to fraction form
   642,334/1,383,326 = 1,383,326/x
3. Step 3: Cross multiply
   642,334x = 1,383,326 × 1,383,326
4. Step 4: Simplify right side
   642,334x = 1,913,590,822,276
5. Step 5: Solve for x
   x = 1,913,590,822,276/642,334
6. Step 6: Final answer
   x = 2,979,121.18