Finding the Third Proportional to 404,626 and 628,672

Step by Step Solution

1. Step 1: Write the proportion equation
   404,626 : 628,672 = 628,672 : x
2. Step 2: Convert to fraction form
   404,626/628,672 = 628,672/x
3. Step 3: Cross multiply
   404,626x = 628,672 × 628,672
4. Step 4: Simplify right side
   404,626x = 395,228,483,584
5. Step 5: Solve for x
   x = 395,228,483,584/404,626
6. Step 6: Final answer
   x = 976,774.81