Finding the Third Proportional to 21,424 and 30,048

Step by Step Solution

1. Step 1: Write the proportion equation
   21,424 : 30,048 = 30,048 : x
2. Step 2: Convert to fraction form
   21,424/30,048 = 30,048/x
3. Step 3: Cross multiply
   21,424x = 30,048 × 30,048
4. Step 4: Simplify right side
   21,424x = 902,882,304
5. Step 5: Solve for x
   x = 902,882,304/21,424
6. Step 6: Final answer
   x = 42,143.50