Finding the Third Proportional to 11,211.75 and 17,431.88

Step by Step Solution

1. Step 1: Write the proportion equation
   11,211.75 : 17,431.88 = 17,431.88 : x
2. Step 2: Convert to fraction form
   11,211.75/17,431.88 = 17,431.88/x
3. Step 3: Cross multiply
   11,211.75x = 17,431.88 × 17,431.88
4. Step 4: Simplify right side
   11,211.75x = 303,870,266.02
5. Step 5: Solve for x
   x = 303,870,266.02/11,211.75
6. Step 6: Final answer
   x = 27,102.84