Finding the Third Proportional to 144,227 and 215,143.50

Step by Step Solution

1. Step 1: Write the proportion equation
   144,227 : 215,143.50 = 215,143.50 : x
2. Step 2: Convert to fraction form
   144,227/215,143.50 = 215,143.50/x
3. Step 3: Cross multiply
   144,227x = 215,143.50 × 215,143.50
4. Step 4: Simplify right side
   144,227x = 46,286,725,592.25
5. Step 5: Solve for x
   x = 46,286,725,592.25/144,227
6. Step 6: Final answer
   x = 320,929.68