Finding the Third Proportional to 12,636 and 19,764

Step by Step Solution

1. Step 1: Write the proportion equation
   12,636 : 19,764 = 19,764 : x
2. Step 2: Convert to fraction form
   12,636/19,764 = 19,764/x
3. Step 3: Cross multiply
   12,636x = 19,764 × 19,764
4. Step 4: Simplify right side
   12,636x = 390,615,696
5. Step 5: Solve for x
   x = 390,615,696/12,636
6. Step 6: Final answer
   x = 30,912.92