Finding the Third Proportional to 248,336 and 384,440.50

Step by Step Solution

1. Step 1: Write the proportion equation
   248,336 : 384,440.50 = 384,440.50 : x
2. Step 2: Convert to fraction form
   248,336/384,440.50 = 384,440.50/x
3. Step 3: Cross multiply
   248,336x = 384,440.50 × 384,440.50
4. Step 4: Simplify right side
   248,336x = 147,794,498,040.25
5. Step 5: Solve for x
   x = 147,794,498,040.25/248,336
6. Step 6: Final answer
   x = 595,139.24