Finding the Third Proportional to 21,120 and 33,440

Step by Step Solution

1. Step 1: Write the proportion equation
   21,120 : 33,440 = 33,440 : x
2. Step 2: Convert to fraction form
   21,120/33,440 = 33,440/x
3. Step 3: Cross multiply
   21,120x = 33,440 × 33,440
4. Step 4: Simplify right side
   21,120x = 1,118,233,600
5. Step 5: Solve for x
   x = 1,118,233,600/21,120
6. Step 6: Final answer
   x = 52,946.67