Finding the Third Proportional to 12,276 and 18,582

Step by Step Solution

1. Step 1: Write the proportion equation
   12,276 : 18,582 = 18,582 : x
2. Step 2: Convert to fraction form
   12,276/18,582 = 18,582/x
3. Step 3: Cross multiply
   12,276x = 18,582 × 18,582
4. Step 4: Simplify right side
   12,276x = 345,290,724
5. Step 5: Solve for x
   x = 345,290,724/12,276
6. Step 6: Final answer
   x = 28,127.30