Finding the Third Proportional to 144,150 and 215,649

Step by Step Solution

1. Step 1: Write the proportion equation
   144,150 : 215,649 = 215,649 : x
2. Step 2: Convert to fraction form
   144,150/215,649 = 215,649/x
3. Step 3: Cross multiply
   144,150x = 215,649 × 215,649
4. Step 4: Simplify right side
   144,150x = 46,504,491,201
5. Step 5: Solve for x
   x = 46,504,491,201/144,150
6. Step 6: Final answer
   x = 322,611.80