Finding the Third Proportional to 158,778 and 231,486

Step by Step Solution

1. Step 1: Write the proportion equation
   158,778 : 231,486 = 231,486 : x
2. Step 2: Convert to fraction form
   158,778/231,486 = 231,486/x
3. Step 3: Cross multiply
   158,778x = 231,486 × 231,486
4. Step 4: Simplify right side
   158,778x = 53,585,768,196
5. Step 5: Solve for x
   x = 53,585,768,196/158,778
6. Step 6: Final answer
   x = 337,488.62