Finding the Third Proportional to 158,760 and 339,345

Step by Step Solution

1. Step 1: Write the proportion equation
   158,760 : 339,345 = 339,345 : x
2. Step 2: Convert to fraction form
   158,760/339,345 = 339,345/x
3. Step 3: Cross multiply
   158,760x = 339,345 × 339,345
4. Step 4: Simplify right side
   158,760x = 115,155,029,025
5. Step 5: Solve for x
   x = 115,155,029,025/158,760
6. Step 6: Final answer
   x = 725,340.32