Finding the Third Proportional to 142,072 and 236,754

Step by Step Solution

1. Step 1: Write the proportion equation
   142,072 : 236,754 = 236,754 : x
2. Step 2: Convert to fraction form
   142,072/236,754 = 236,754/x
3. Step 3: Cross multiply
   142,072x = 236,754 × 236,754
4. Step 4: Simplify right side
   142,072x = 56,052,456,516
5. Step 5: Solve for x
   x = 56,052,456,516/142,072
6. Step 6: Final answer
   x = 394,535.56