Finding the Third Proportional to 640,864 and 1,383,054

Step by Step Solution

1. Step 1: Write the proportion equation
   640,864 : 1,383,054 = 1,383,054 : x
2. Step 2: Convert to fraction form
   640,864/1,383,054 = 1,383,054/x
3. Step 3: Cross multiply
   640,864x = 1,383,054 × 1,383,054
4. Step 4: Simplify right side
   640,864x = 1,912,838,366,916
5. Step 5: Solve for x
   x = 1,912,838,366,916/640,864
6. Step 6: Final answer
   x = 2,984,780.49