Finding the Third Proportional to 200,400 and 300,048

Step by Step Solution

1. Step 1: Write the proportion equation
   200,400 : 300,048 = 300,048 : x
2. Step 2: Convert to fraction form
   200,400/300,048 = 300,048/x
3. Step 3: Cross multiply
   200,400x = 300,048 × 300,048
4. Step 4: Simplify right side
   200,400x = 90,028,802,304
5. Step 5: Solve for x
   x = 90,028,802,304/200,400
6. Step 6: Final answer
   x = 449,245.52