Finding the Third Proportional to 102.87 and 222.89

Step by Step Solution

1. Step 1: Write the proportion equation
   102.87 : 222.89 = 222.89 : x
2. Step 2: Convert to fraction form
   102.87/222.89 = 222.89/x
3. Step 3: Cross multiply
   102.87x = 222.89 × 222.89
4. Step 4: Simplify right side
   102.87x = 49,680.23
5. Step 5: Solve for x
   x = 49,680.23/102.87
6. Step 6: Final answer
   x = 482.96