Finding the Third Proportional to 9,240 and 12,205

Step by Step Solution

1. Step 1: Write the proportion equation
   9,240 : 12,205 = 12,205 : x
2. Step 2: Convert to fraction form
   9,240/12,205 = 12,205/x
3. Step 3: Cross multiply
   9,240x = 12,205 × 12,205
4. Step 4: Simplify right side
   9,240x = 148,962,025
5. Step 5: Solve for x
   x = 148,962,025/9,240
6. Step 6: Final answer
   x = 16,121.43