Finding the Third Proportional to 12,786 and 19,749

Step by Step Solution

1. Step 1: Write the proportion equation
   12,786 : 19,749 = 19,749 : x
2. Step 2: Convert to fraction form
   12,786/19,749 = 19,749/x
3. Step 3: Cross multiply
   12,786x = 19,749 × 19,749
4. Step 4: Simplify right side
   12,786x = 390,023,001
5. Step 5: Solve for x
   x = 390,023,001/12,786
6. Step 6: Final answer
   x = 30,503.91