Finding the Third Proportional to 13,410 and 20,839

Step by Step Solution

1. Step 1: Write the proportion equation
   13,410 : 20,839 = 20,839 : x
2. Step 2: Convert to fraction form
   13,410/20,839 = 20,839/x
3. Step 3: Cross multiply
   13,410x = 20,839 × 20,839
4. Step 4: Simplify right side
   13,410x = 434,263,921
5. Step 5: Solve for x
   x = 434,263,921/13,410
6. Step 6: Final answer
   x = 32,383.59