Finding the Third Proportional to 404,920 and 628,602

Step by Step Solution

1. Step 1: Write the proportion equation
   404,920 : 628,602 = 628,602 : x
2. Step 2: Convert to fraction form
   404,920/628,602 = 628,602/x
3. Step 3: Cross multiply
   404,920x = 628,602 × 628,602
4. Step 4: Simplify right side
   404,920x = 395,140,474,404
5. Step 5: Solve for x
   x = 395,140,474,404/404,920
6. Step 6: Final answer
   x = 975,848.25