Finding the Third Proportional to 11,990.75 and 17,986.25

Step by Step Solution

1. Step 1: Write the proportion equation
   11,990.75 : 17,986.25 = 17,986.25 : x
2. Step 2: Convert to fraction form
   11,990.75/17,986.25 = 17,986.25/x
3. Step 3: Cross multiply
   11,990.75x = 17,986.25 × 17,986.25
4. Step 4: Simplify right side
   11,990.75x = 323,505,189.06
5. Step 5: Solve for x
   x = 323,505,189.06/11,990.75
6. Step 6: Final answer
   x = 26,979.56