Finding the Third Proportional to 11,806.88 and 25,690.50

Step by Step Solution

1. Step 1: Write the proportion equation
   11,806.88 : 25,690.50 = 25,690.50 : x
2. Step 2: Convert to fraction form
   11,806.88/25,690.50 = 25,690.50/x
3. Step 3: Cross multiply
   11,806.88x = 25,690.50 × 25,690.50
4. Step 4: Simplify right side
   11,806.88x = 660,001,790.25
5. Step 5: Solve for x
   x = 660,001,790.25/11,806.88
6. Step 6: Final answer
   x = 55,899.79