Finding the Third Proportional to 142,976 and 236,928

Step by Step Solution

1. Step 1: Write the proportion equation
   142,976 : 236,928 = 236,928 : x
2. Step 2: Convert to fraction form
   142,976/236,928 = 236,928/x
3. Step 3: Cross multiply
   142,976x = 236,928 × 236,928
4. Step 4: Simplify right side
   142,976x = 56,134,877,184
5. Step 5: Solve for x
   x = 56,134,877,184/142,976
6. Step 6: Final answer
   x = 392,617.48