Finding the Third Proportional to 272,186 and 408,550.50

Step by Step Solution

1. Step 1: Write the proportion equation
   272,186 : 408,550.50 = 408,550.50 : x
2. Step 2: Convert to fraction form
   272,186/408,550.50 = 408,550.50/x
3. Step 3: Cross multiply
   272,186x = 408,550.50 × 408,550.50
4. Step 4: Simplify right side
   272,186x = 166,913,511,050.25
5. Step 5: Solve for x
   x = 166,913,511,050.25/272,186
6. Step 6: Final answer
   x = 613,233.27