Finding the Third Proportional to 12,312 and 17,919

Step by Step Solution

1. Step 1: Write the proportion equation
   12,312 : 17,919 = 17,919 : x
2. Step 2: Convert to fraction form
   12,312/17,919 = 17,919/x
3. Step 3: Cross multiply
   12,312x = 17,919 × 17,919
4. Step 4: Simplify right side
   12,312x = 321,090,561
5. Step 5: Solve for x
   x = 321,090,561/12,312
6. Step 6: Final answer
   x = 26,079.48