Finding the Third Proportional to 12,477.80 and 25,839

Step by Step Solution

1. Step 1: Write the proportion equation
   12,477.80 : 25,839 = 25,839 : x
2. Step 2: Convert to fraction form
   12,477.80/25,839 = 25,839/x
3. Step 3: Cross multiply
   12,477.80x = 25,839 × 25,839
4. Step 4: Simplify right side
   12,477.80x = 667,653,921
5. Step 5: Solve for x
   x = 667,653,921/12,477.80
6. Step 6: Final answer
   x = 53,507.36