Finding the Third Proportional to 171,315 and 394,834.50

Step by Step Solution

1. Step 1: Write the proportion equation
   171,315 : 394,834.50 = 394,834.50 : x
2. Step 2: Convert to fraction form
   171,315/394,834.50 = 394,834.50/x
3. Step 3: Cross multiply
   171,315x = 394,834.50 × 394,834.50
4. Step 4: Simplify right side
   171,315x = 155,894,282,390.25
5. Step 5: Solve for x
   x = 155,894,282,390.25/171,315
6. Step 6: Final answer
   x = 909,986.18