Finding the Third Proportional to 12,276 and 25,816

Step by Step Solution

1. Step 1: Write the proportion equation
   12,276 : 25,816 = 25,816 : x
2. Step 2: Convert to fraction form
   12,276/25,816 = 25,816/x
3. Step 3: Cross multiply
   12,276x = 25,816 × 25,816
4. Step 4: Simplify right side
   12,276x = 666,465,856
5. Step 5: Solve for x
   x = 666,465,856/12,276
6. Step 6: Final answer
   x = 54,290.15