Finding the Third Proportional to 172,682 and 377,308

Step by Step Solution

1. Step 1: Write the proportion equation
   172,682 : 377,308 = 377,308 : x
2. Step 2: Convert to fraction form
   172,682/377,308 = 377,308/x
3. Step 3: Cross multiply
   172,682x = 377,308 × 377,308
4. Step 4: Simplify right side
   172,682x = 142,361,326,864
5. Step 5: Solve for x
   x = 142,361,326,864/172,682
6. Step 6: Final answer
   x = 824,413.24