Finding the Third Proportional to 479,256 and 635,940

Step by Step Solution

1. Step 1: Write the proportion equation
   479,256 : 635,940 = 635,940 : x
2. Step 2: Convert to fraction form
   479,256/635,940 = 635,940/x
3. Step 3: Cross multiply
   479,256x = 635,940 × 635,940
4. Step 4: Simplify right side
   479,256x = 404,419,683,600
5. Step 5: Solve for x
   x = 404,419,683,600/479,256
6. Step 6: Final answer
   x = 843,848.97