Finding the Third Proportional to 13,390 and 20,801

Step by Step Solution

1. Step 1: Write the proportion equation
   13,390 : 20,801 = 20,801 : x
2. Step 2: Convert to fraction form
   13,390/20,801 = 20,801/x
3. Step 3: Cross multiply
   13,390x = 20,801 × 20,801
4. Step 4: Simplify right side
   13,390x = 432,681,601
5. Step 5: Solve for x
   x = 432,681,601/13,390
6. Step 6: Final answer
   x = 32,313.79