Finding the Third Proportional to 144,230 and 215,144

Step by Step Solution

1. Step 1: Write the proportion equation
   144,230 : 215,144 = 215,144 : x
2. Step 2: Convert to fraction form
   144,230/215,144 = 215,144/x
3. Step 3: Cross multiply
   144,230x = 215,144 × 215,144
4. Step 4: Simplify right side
   144,230x = 46,286,940,736
5. Step 5: Solve for x
   x = 46,286,940,736/144,230
6. Step 6: Final answer
   x = 320,924.50