Finding the Third Proportional to 11,990 and 25,798

Step by Step Solution

1. Step 1: Write the proportion equation
   11,990 : 25,798 = 25,798 : x
2. Step 2: Convert to fraction form
   11,990/25,798 = 25,798/x
3. Step 3: Cross multiply
   11,990x = 25,798 × 25,798
4. Step 4: Simplify right side
   11,990x = 665,536,804
5. Step 5: Solve for x
   x = 665,536,804/11,990
6. Step 6: Final answer
   x = 55,507.66