Finding the Third Proportional to 155,487 and 339,949.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,487 : 339,949.50 = 339,949.50 : x
2. Step 2: Convert to fraction form
   155,487/339,949.50 = 339,949.50/x
3. Step 3: Cross multiply
   155,487x = 339,949.50 × 339,949.50
4. Step 4: Simplify right side
   155,487x = 115,565,662,550.25
5. Step 5: Solve for x
   x = 115,565,662,550.25/155,487
6. Step 6: Final answer
   x = 743,249.68