Finding the Third Proportional to 21,600 and 33,320

Step by Step Solution

1. Step 1: Write the proportion equation
   21,600 : 33,320 = 33,320 : x
2. Step 2: Convert to fraction form
   21,600/33,320 = 33,320/x
3. Step 3: Cross multiply
   21,600x = 33,320 × 33,320
4. Step 4: Simplify right side
   21,600x = 1,110,222,400
5. Step 5: Solve for x
   x = 1,110,222,400/21,600
6. Step 6: Final answer
   x = 51,399.19