Finding the Third Proportional to 142.13 and 334.50

Step by Step Solution

1. Step 1: Write the proportion equation
   142.13 : 334.50 = 334.50 : x
2. Step 2: Convert to fraction form
   142.13/334.50 = 334.50/x
3. Step 3: Cross multiply
   142.13x = 334.50 × 334.50
4. Step 4: Simplify right side
   142.13x = 111,890.25
5. Step 5: Solve for x
   x = 111,890.25/142.13
6. Step 6: Final answer
   x = 787.27