Finding the Third Proportional to 7,113.50 and 10,991.25

Step by Step Solution

1. Step 1: Write the proportion equation
   7,113.50 : 10,991.25 = 10,991.25 : x
2. Step 2: Convert to fraction form
   7,113.50/10,991.25 = 10,991.25/x
3. Step 3: Cross multiply
   7,113.50x = 10,991.25 × 10,991.25
4. Step 4: Simplify right side
   7,113.50x = 120,807,576.56
5. Step 5: Solve for x
   x = 120,807,576.56/7,113.50
6. Step 6: Final answer
   x = 16,982.86