Finding the Third Proportional to 394,839 and 635,863.50

Step by Step Solution

1. Step 1: Write the proportion equation
   394,839 : 635,863.50 = 635,863.50 : x
2. Step 2: Convert to fraction form
   394,839/635,863.50 = 635,863.50/x
3. Step 3: Cross multiply
   394,839x = 635,863.50 × 635,863.50
4. Step 4: Simplify right side
   394,839x = 404,322,390,632.25
5. Step 5: Solve for x
   x = 404,322,390,632.25/394,839
6. Step 6: Final answer
   x = 1,024,018.37