Finding the Third Proportional to 12,405 and 26,019

Step by Step Solution

1. Step 1: Write the proportion equation
   12,405 : 26,019 = 26,019 : x
2. Step 2: Convert to fraction form
   12,405/26,019 = 26,019/x
3. Step 3: Cross multiply
   12,405x = 26,019 × 26,019
4. Step 4: Simplify right side
   12,405x = 676,988,361
5. Step 5: Solve for x
   x = 676,988,361/12,405
6. Step 6: Final answer
   x = 54,573.83