Finding the Third Proportional to 12,759 and 19,707

Step by Step Solution

1. Step 1: Write the proportion equation
   12,759 : 19,707 = 19,707 : x
2. Step 2: Convert to fraction form
   12,759/19,707 = 19,707/x
3. Step 3: Cross multiply
   12,759x = 19,707 × 19,707
4. Step 4: Simplify right side
   12,759x = 388,365,849
5. Step 5: Solve for x
   x = 388,365,849/12,759
6. Step 6: Final answer
   x = 30,438.58