Finding the Third Proportional to 12,919 and 28,259

Step by Step Solution

1. Step 1: Write the proportion equation
   12,919 : 28,259 = 28,259 : x
2. Step 2: Convert to fraction form
   12,919/28,259 = 28,259/x
3. Step 3: Cross multiply
   12,919x = 28,259 × 28,259
4. Step 4: Simplify right side
   12,919x = 798,571,081
5. Step 5: Solve for x
   x = 798,571,081/12,919
6. Step 6: Final answer
   x = 61,813.69