Finding the Third Proportional to 120,640.50 and 238,253.50

Step by Step Solution

1. Step 1: Write the proportion equation
   120,640.50 : 238,253.50 = 238,253.50 : x
2. Step 2: Convert to fraction form
   120,640.50/238,253.50 = 238,253.50/x
3. Step 3: Cross multiply
   120,640.50x = 238,253.50 × 238,253.50
4. Step 4: Simplify right side
   120,640.50x = 56,764,730,262.25
5. Step 5: Solve for x
   x = 56,764,730,262.25/120,640.50
6. Step 6: Final answer
   x = 470,527.98