Finding the Third Proportional to 158,990 and 222,838

Step by Step Solution

1. Step 1: Write the proportion equation
   158,990 : 222,838 = 222,838 : x
2. Step 2: Convert to fraction form
   158,990/222,838 = 222,838/x
3. Step 3: Cross multiply
   158,990x = 222,838 × 222,838
4. Step 4: Simplify right side
   158,990x = 49,656,774,244
5. Step 5: Solve for x
   x = 49,656,774,244/158,990
6. Step 6: Final answer
   x = 312,326.40