Finding the Third Proportional to 171,993 and 260,584.50

Step by Step Solution

1. Step 1: Write the proportion equation
   171,993 : 260,584.50 = 260,584.50 : x
2. Step 2: Convert to fraction form
   171,993/260,584.50 = 260,584.50/x
3. Step 3: Cross multiply
   171,993x = 260,584.50 × 260,584.50
4. Step 4: Simplify right side
   171,993x = 67,904,281,640.25
5. Step 5: Solve for x
   x = 67,904,281,640.25/171,993
6. Step 6: Final answer
   x = 394,808.40