Finding the Third Proportional to 152,968.50 and 331,357.50

Step by Step Solution

1. Step 1: Write the proportion equation
   152,968.50 : 331,357.50 = 331,357.50 : x
2. Step 2: Convert to fraction form
   152,968.50/331,357.50 = 331,357.50/x
3. Step 3: Cross multiply
   152,968.50x = 331,357.50 × 331,357.50
4. Step 4: Simplify right side
   152,968.50x = 109,797,792,806.25
5. Step 5: Solve for x
   x = 109,797,792,806.25/152,968.50
6. Step 6: Final answer
   x = 717,780.41