Finding the Third Proportional to 12,170 and 25,912

Step by Step Solution

1. Step 1: Write the proportion equation
   12,170 : 25,912 = 25,912 : x
2. Step 2: Convert to fraction form
   12,170/25,912 = 25,912/x
3. Step 3: Cross multiply
   12,170x = 25,912 × 25,912
4. Step 4: Simplify right side
   12,170x = 671,431,744
5. Step 5: Solve for x
   x = 671,431,744/12,170
6. Step 6: Final answer
   x = 55,171.06