Finding the Third Proportional to 144,469 and 215,173.50

Step by Step Solution

1. Step 1: Write the proportion equation
   144,469 : 215,173.50 = 215,173.50 : x
2. Step 2: Convert to fraction form
   144,469/215,173.50 = 215,173.50/x
3. Step 3: Cross multiply
   144,469x = 215,173.50 × 215,173.50
4. Step 4: Simplify right side
   144,469x = 46,299,635,102.25
5. Step 5: Solve for x
   x = 46,299,635,102.25/144,469
6. Step 6: Final answer
   x = 320,481.45