Finding the Third Proportional to 12,104 and 15,906

Step by Step Solution

1. Step 1: Write the proportion equation
   12,104 : 15,906 = 15,906 : x
2. Step 2: Convert to fraction form
   12,104/15,906 = 15,906/x
3. Step 3: Cross multiply
   12,104x = 15,906 × 15,906
4. Step 4: Simplify right side
   12,104x = 253,000,836
5. Step 5: Solve for x
   x = 253,000,836/12,104
6. Step 6: Final answer
   x = 20,902.25