Finding the Third Proportional to 19,680 and 33,040

Step by Step Solution

1. Step 1: Write the proportion equation
   19,680 : 33,040 = 33,040 : x
2. Step 2: Convert to fraction form
   19,680/33,040 = 33,040/x
3. Step 3: Cross multiply
   19,680x = 33,040 × 33,040
4. Step 4: Simplify right side
   19,680x = 1,091,641,600
5. Step 5: Solve for x
   x = 1,091,641,600/19,680
6. Step 6: Final answer
   x = 55,469.59