Finding the Third Proportional to 158,980 and 340,992

Step by Step Solution

1. Step 1: Write the proportion equation
   158,980 : 340,992 = 340,992 : x
2. Step 2: Convert to fraction form
   158,980/340,992 = 340,992/x
3. Step 3: Cross multiply
   158,980x = 340,992 × 340,992
4. Step 4: Simplify right side
   158,980x = 116,275,544,064
5. Step 5: Solve for x
   x = 116,275,544,064/158,980
6. Step 6: Final answer
   x = 731,384.73