Finding the Third Proportional to 21,640 and 33,960

Step by Step Solution

1. Step 1: Write the proportion equation
   21,640 : 33,960 = 33,960 : x
2. Step 2: Convert to fraction form
   21,640/33,960 = 33,960/x
3. Step 3: Cross multiply
   21,640x = 33,960 × 33,960
4. Step 4: Simplify right side
   21,640x = 1,153,281,600
5. Step 5: Solve for x
   x = 1,153,281,600/21,640
6. Step 6: Final answer
   x = 53,293.97