Finding the Third Proportional to 196,336.50 and 315,006

Step by Step Solution

1. Step 1: Write the proportion equation
   196,336.50 : 315,006 = 315,006 : x
2. Step 2: Convert to fraction form
   196,336.50/315,006 = 315,006/x
3. Step 3: Cross multiply
   196,336.50x = 315,006 × 315,006
4. Step 4: Simplify right side
   196,336.50x = 99,228,780,036
5. Step 5: Solve for x
   x = 99,228,780,036/196,336.50
6. Step 6: Final answer
   x = 505,401.59