Finding the Third Proportional to 143,923.50 and 215,903.25

Step by Step Solution

1. Step 1: Write the proportion equation
   143,923.50 : 215,903.25 = 215,903.25 : x
2. Step 2: Convert to fraction form
   143,923.50/215,903.25 = 215,903.25/x
3. Step 3: Cross multiply
   143,923.50x = 215,903.25 × 215,903.25
4. Step 4: Simplify right side
   143,923.50x = 46,614,213,360.56
5. Step 5: Solve for x
   x = 46,614,213,360.56/143,923.50
6. Step 6: Final answer
   x = 323,881.88