Finding the Third Proportional to 12,276 and 16,818

Step by Step Solution

1. Step 1: Write the proportion equation
   12,276 : 16,818 = 16,818 : x
2. Step 2: Convert to fraction form
   12,276/16,818 = 16,818/x
3. Step 3: Cross multiply
   12,276x = 16,818 × 16,818
4. Step 4: Simplify right side
   12,276x = 282,845,124
5. Step 5: Solve for x
   x = 282,845,124/12,276
6. Step 6: Final answer
   x = 23,040.50