Finding the Third Proportional to 199,636.50 and 317,487

Step by Step Solution

1. Step 1: Write the proportion equation
   199,636.50 : 317,487 = 317,487 : x
2. Step 2: Convert to fraction form
   199,636.50/317,487 = 317,487/x
3. Step 3: Cross multiply
   199,636.50x = 317,487 × 317,487
4. Step 4: Simplify right side
   199,636.50x = 100,797,995,169
5. Step 5: Solve for x
   x = 100,797,995,169/199,636.50
6. Step 6: Final answer
   x = 504,907.65