Finding the Third Proportional to 158,778 and 246,121.50

Step by Step Solution

1. Step 1: Write the proportion equation
   158,778 : 246,121.50 = 246,121.50 : x
2. Step 2: Convert to fraction form
   158,778/246,121.50 = 246,121.50/x
3. Step 3: Cross multiply
   158,778x = 246,121.50 × 246,121.50
4. Step 4: Simplify right side
   158,778x = 60,575,792,762.25
5. Step 5: Solve for x
   x = 60,575,792,762.25/158,778
6. Step 6: Final answer
   x = 381,512.51