Finding the Third Proportional to 142,067 and 215,692

Step by Step Solution

1. Step 1: Write the proportion equation
   142,067 : 215,692 = 215,692 : x
2. Step 2: Convert to fraction form
   142,067/215,692 = 215,692/x
3. Step 3: Cross multiply
   142,067x = 215,692 × 215,692
4. Step 4: Simplify right side
   142,067x = 46,523,038,864
5. Step 5: Solve for x
   x = 46,523,038,864/142,067
6. Step 6: Final answer
   x = 327,472.52