Finding the Third Proportional to 5,162.50 and 10,991

Step by Step Solution

1. Step 1: Write the proportion equation
   5,162.50 : 10,991 = 10,991 : x
2. Step 2: Convert to fraction form
   5,162.50/10,991 = 10,991/x
3. Step 3: Cross multiply
   5,162.50x = 10,991 × 10,991
4. Step 4: Simplify right side
   5,162.50x = 120,802,081
5. Step 5: Solve for x
   x = 120,802,081/5,162.50
6. Step 6: Final answer
   x = 23,399.92