Finding the Third Proportional to 122.45 and 222.83

Step by Step Solution

1. Step 1: Write the proportion equation
   122.45 : 222.83 = 222.83 : x
2. Step 2: Convert to fraction form
   122.45/222.83 = 222.83/x
3. Step 3: Cross multiply
   122.45x = 222.83 × 222.83
4. Step 4: Simplify right side
   122.45x = 49,652.81
5. Step 5: Solve for x
   x = 49,652.81/122.45
6. Step 6: Final answer
   x = 405.50