Finding the Third Proportional to 156.47 and 222.42

Step by Step Solution

1. Step 1: Write the proportion equation
   156.47 : 222.42 = 222.42 : x
2. Step 2: Convert to fraction form
   156.47/222.42 = 222.42/x
3. Step 3: Cross multiply
   156.47x = 222.42 × 222.42
4. Step 4: Simplify right side
   156.47x = 49,471.49
5. Step 5: Solve for x
   x = 49,471.49/156.47
6. Step 6: Final answer
   x = 316.17