Finding the Third Proportional to 199,786.50 and 281,034

Step by Step Solution

1. Step 1: Write the proportion equation
   199,786.50 : 281,034 = 281,034 : x
2. Step 2: Convert to fraction form
   199,786.50/281,034 = 281,034/x
3. Step 3: Cross multiply
   199,786.50x = 281,034 × 281,034
4. Step 4: Simplify right side
   199,786.50x = 78,980,109,156
5. Step 5: Solve for x
   x = 78,980,109,156/199,786.50
6. Step 6: Final answer
   x = 395,322.55