Finding the Third Proportional to 6,258.94 and 12,690.56

Step by Step Solution

1. Step 1: Write the proportion equation
   6,258.94 : 12,690.56 = 12,690.56 : x
2. Step 2: Convert to fraction form
   6,258.94/12,690.56 = 12,690.56/x
3. Step 3: Cross multiply
   6,258.94x = 12,690.56 × 12,690.56
4. Step 4: Simplify right side
   6,258.94x = 161,050,376.57
5. Step 5: Solve for x
   x = 161,050,376.57/6,258.94
6. Step 6: Final answer
   x = 25,731.26