Finding the Third Proportional to 404,622 and 628,666

Step by Step Solution

1. Step 1: Write the proportion equation
   404,622 : 628,666 = 628,666 : x
2. Step 2: Convert to fraction form
   404,622/628,666 = 628,666/x
3. Step 3: Cross multiply
   404,622x = 628,666 × 628,666
4. Step 4: Simplify right side
   404,622x = 395,220,939,556
5. Step 5: Solve for x
   x = 395,220,939,556/404,622
6. Step 6: Final answer
   x = 976,765.82