Finding the Third Proportional to 404,624 and 628,669

Step by Step Solution

1. Step 1: Write the proportion equation
   404,624 : 628,669 = 628,669 : x
2. Step 2: Convert to fraction form
   404,624/628,669 = 628,669/x
3. Step 3: Cross multiply
   404,624x = 628,669 × 628,669
4. Step 4: Simplify right side
   404,624x = 395,224,711,561
5. Step 5: Solve for x
   x = 395,224,711,561/404,624
6. Step 6: Final answer
   x = 976,770.31