Finding the Third Proportional to 11,200 and 22,400

Step by Step Solution

1. Step 1: Write the proportion equation
   11,200 : 22,400 = 22,400 : x
2. Step 2: Convert to fraction form
   11,200/22,400 = 22,400/x
3. Step 3: Cross multiply
   11,200x = 22,400 × 22,400
4. Step 4: Simplify right side
   11,200x = 501,760,000
5. Step 5: Solve for x
   x = 501,760,000/11,200
6. Step 6: Final answer
   x = 44,800