Finding the Third Proportional to 65,731 and 143,900.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,731 : 143,900.50 = 143,900.50 : x
2. Step 2: Convert to fraction form
   65,731/143,900.50 = 143,900.50/x
3. Step 3: Cross multiply
   65,731x = 143,900.50 × 143,900.50
4. Step 4: Simplify right side
   65,731x = 20,707,353,900.25
5. Step 5: Solve for x
   x = 20,707,353,900.25/65,731
6. Step 6: Final answer
   x = 315,031.78