Finding the Third Proportional to 9,021 and 12,151.50

Step by Step Solution

1. Step 1: Write the proportion equation
   9,021 : 12,151.50 = 12,151.50 : x
2. Step 2: Convert to fraction form
   9,021/12,151.50 = 12,151.50/x
3. Step 3: Cross multiply
   9,021x = 12,151.50 × 12,151.50
4. Step 4: Simplify right side
   9,021x = 147,658,952.25
5. Step 5: Solve for x
   x = 147,658,952.25/9,021
6. Step 6: Final answer
   x = 16,368.36