Finding the Third Proportional to 144,132 and 215,622

Step by Step Solution

1. Step 1: Write the proportion equation
   144,132 : 215,622 = 215,622 : x
2. Step 2: Convert to fraction form
   144,132/215,622 = 215,622/x
3. Step 3: Cross multiply
   144,132x = 215,622 × 215,622
4. Step 4: Simplify right side
   144,132x = 46,492,846,884
5. Step 5: Solve for x
   x = 46,492,846,884/144,132
6. Step 6: Final answer
   x = 322,571.30