Finding the Third Proportional to 404,280 and 632,304

Step by Step Solution

1. Step 1: Write the proportion equation
   404,280 : 632,304 = 632,304 : x
2. Step 2: Convert to fraction form
   404,280/632,304 = 632,304/x
3. Step 3: Cross multiply
   404,280x = 632,304 × 632,304
4. Step 4: Simplify right side
   404,280x = 399,808,348,416
5. Step 5: Solve for x
   x = 399,808,348,416/404,280
6. Step 6: Final answer
   x = 988,939.22