Finding the Third Proportional to 64,288.50 and 143,481

Step by Step Solution

1. Step 1: Write the proportion equation
   64,288.50 : 143,481 = 143,481 : x
2. Step 2: Convert to fraction form
   64,288.50/143,481 = 143,481/x
3. Step 3: Cross multiply
   64,288.50x = 143,481 × 143,481
4. Step 4: Simplify right side
   64,288.50x = 20,586,797,361
5. Step 5: Solve for x
   x = 20,586,797,361/64,288.50
6. Step 6: Final answer
   x = 320,225.19