Finding the Third Proportional to 143,805 and 215,797.50

Step by Step Solution

1. Step 1: Write the proportion equation
   143,805 : 215,797.50 = 215,797.50 : x
2. Step 2: Convert to fraction form
   143,805/215,797.50 = 215,797.50/x
3. Step 3: Cross multiply
   143,805x = 215,797.50 × 215,797.50
4. Step 4: Simplify right side
   143,805x = 46,568,561,006.25
5. Step 5: Solve for x
   x = 46,568,561,006.25/143,805
6. Step 6: Final answer
   x = 323,831.31