Finding the Third Proportional to 250,674 and 388,339.50

Step by Step Solution

1. Step 1: Write the proportion equation
   250,674 : 388,339.50 = 388,339.50 : x
2. Step 2: Convert to fraction form
   250,674/388,339.50 = 388,339.50/x
3. Step 3: Cross multiply
   250,674x = 388,339.50 × 388,339.50
4. Step 4: Simplify right side
   250,674x = 150,807,567,260.25
5. Step 5: Solve for x
   x = 150,807,567,260.25/250,674
6. Step 6: Final answer
   x = 601,608.33