Finding the Third Proportional to 9,021.75 and 12,290.25

Step by Step Solution

1. Step 1: Write the proportion equation
   9,021.75 : 12,290.25 = 12,290.25 : x
2. Step 2: Convert to fraction form
   9,021.75/12,290.25 = 12,290.25/x
3. Step 3: Cross multiply
   9,021.75x = 12,290.25 × 12,290.25
4. Step 4: Simplify right side
   9,021.75x = 151,050,245.06
5. Step 5: Solve for x
   x = 151,050,245.06/9,021.75
6. Step 6: Final answer
   x = 16,742.90