Finding the Third Proportional to 65,730.50 and 143,900

Step by Step Solution

1. Step 1: Write the proportion equation
   65,730.50 : 143,900 = 143,900 : x
2. Step 2: Convert to fraction form
   65,730.50/143,900 = 143,900/x
3. Step 3: Cross multiply
   65,730.50x = 143,900 × 143,900
4. Step 4: Simplify right side
   65,730.50x = 20,707,210,000
5. Step 5: Solve for x
   x = 20,707,210,000/65,730.50
6. Step 6: Final answer
   x = 315,031.99