Finding the Third Proportional to 5,977.88 and 12,639.38

Step by Step Solution

1. Step 1: Write the proportion equation
   5,977.88 : 12,639.38 = 12,639.38 : x
2. Step 2: Convert to fraction form
   5,977.88/12,639.38 = 12,639.38/x
3. Step 3: Cross multiply
   5,977.88x = 12,639.38 × 12,639.38
4. Step 4: Simplify right side
   5,977.88x = 159,753,800.39
5. Step 5: Solve for x
   x = 159,753,800.39/5,977.88
6. Step 6: Final answer
   x = 26,724.18