Finding the Third Proportional to 12,960 and 18,810

Step by Step Solution

1. Step 1: Write the proportion equation
   12,960 : 18,810 = 18,810 : x
2. Step 2: Convert to fraction form
   12,960/18,810 = 18,810/x
3. Step 3: Cross multiply
   12,960x = 18,810 × 18,810
4. Step 4: Simplify right side
   12,960x = 353,816,100
5. Step 5: Solve for x
   x = 353,816,100/12,960
6. Step 6: Final answer
   x = 27,300.63