Finding the Third Proportional to 158,810 and 339,150

Step by Step Solution

1. Step 1: Write the proportion equation
   158,810 : 339,150 = 339,150 : x
2. Step 2: Convert to fraction form
   158,810/339,150 = 339,150/x
3. Step 3: Cross multiply
   158,810x = 339,150 × 339,150
4. Step 4: Simplify right side
   158,810x = 115,022,722,500
5. Step 5: Solve for x
   x = 115,022,722,500/158,810
6. Step 6: Final answer
   x = 724,278.84