Finding the Third Proportional to 158,485.50 and 324,258.50

Step by Step Solution

1. Step 1: Write the proportion equation
   158,485.50 : 324,258.50 = 324,258.50 : x
2. Step 2: Convert to fraction form
   158,485.50/324,258.50 = 324,258.50/x
3. Step 3: Cross multiply
   158,485.50x = 324,258.50 × 324,258.50
4. Step 4: Simplify right side
   158,485.50x = 105,143,574,822.25
5. Step 5: Solve for x
   x = 105,143,574,822.25/158,485.50
6. Step 6: Final answer
   x = 663,427.09