Finding the Third Proportional to 142,992 and 217,562

Step by Step Solution

1. Step 1: Write the proportion equation
   142,992 : 217,562 = 217,562 : x
2. Step 2: Convert to fraction form
   142,992/217,562 = 217,562/x
3. Step 3: Cross multiply
   142,992x = 217,562 × 217,562
4. Step 4: Simplify right side
   142,992x = 47,333,223,844
5. Step 5: Solve for x
   x = 47,333,223,844/142,992
6. Step 6: Final answer
   x = 331,020.08