Finding the Third Proportional to 12,960 and 28,356

Step by Step Solution

1. Step 1: Write the proportion equation
   12,960 : 28,356 = 28,356 : x
2. Step 2: Convert to fraction form
   12,960/28,356 = 28,356/x
3. Step 3: Cross multiply
   12,960x = 28,356 × 28,356
4. Step 4: Simplify right side
   12,960x = 804,062,736
5. Step 5: Solve for x
   x = 804,062,736/12,960
6. Step 6: Final answer
   x = 62,041.88