Finding the Third Proportional to 248,568 and 388,846.50

Step by Step Solution

1. Step 1: Write the proportion equation
   248,568 : 388,846.50 = 388,846.50 : x
2. Step 2: Convert to fraction form
   248,568/388,846.50 = 388,846.50/x
3. Step 3: Cross multiply
   248,568x = 388,846.50 × 388,846.50
4. Step 4: Simplify right side
   248,568x = 151,201,600,562.25
5. Step 5: Solve for x
   x = 151,201,600,562.25/248,568
6. Step 6: Final answer
   x = 608,290.69