Finding the Third Proportional to 267,640.50 and 394,068

Step by Step Solution

1. Step 1: Write the proportion equation
   267,640.50 : 394,068 = 394,068 : x
2. Step 2: Convert to fraction form
   267,640.50/394,068 = 394,068/x
3. Step 3: Cross multiply
   267,640.50x = 394,068 × 394,068
4. Step 4: Simplify right side
   267,640.50x = 155,289,588,624
5. Step 5: Solve for x
   x = 155,289,588,624/267,640.50
6. Step 6: Final answer
   x = 580,217.08