Finding the Third Proportional to 404,923 and 628,607

Step by Step Solution

1. Step 1: Write the proportion equation
   404,923 : 628,607 = 628,607 : x
2. Step 2: Convert to fraction form
   404,923/628,607 = 628,607/x
3. Step 3: Cross multiply
   404,923x = 628,607 × 628,607
4. Step 4: Simplify right side
   404,923x = 395,146,760,449
5. Step 5: Solve for x
   x = 395,146,760,449/404,923
6. Step 6: Final answer
   x = 975,856.55