Finding the Third Proportional to 13,692 and 21,300

Step by Step Solution

1. Step 1: Write the proportion equation
   13,692 : 21,300 = 21,300 : x
2. Step 2: Convert to fraction form
   13,692/21,300 = 21,300/x
3. Step 3: Cross multiply
   13,692x = 21,300 × 21,300
4. Step 4: Simplify right side
   13,692x = 453,690,000
5. Step 5: Solve for x
   x = 453,690,000/13,692
6. Step 6: Final answer
   x = 33,135.41