Finding the Third Proportional to 245,859 and 367,216.50

Step by Step Solution

1. Step 1: Write the proportion equation
   245,859 : 367,216.50 = 367,216.50 : x
2. Step 2: Convert to fraction form
   245,859/367,216.50 = 367,216.50/x
3. Step 3: Cross multiply
   245,859x = 367,216.50 × 367,216.50
4. Step 4: Simplify right side
   245,859x = 134,847,957,872.25
5. Step 5: Solve for x
   x = 134,847,957,872.25/245,859
6. Step 6: Final answer
   x = 548,476.80