Finding the Third Proportional to 191,215.69 and 281,257.31

Step by Step Solution

1. Step 1: Write the proportion equation
   191,215.69 : 281,257.31 = 281,257.31 : x
2. Step 2: Convert to fraction form
   191,215.69/281,257.31 = 281,257.31/x
3. Step 3: Cross multiply
   191,215.69x = 281,257.31 × 281,257.31
4. Step 4: Simplify right side
   191,215.69x = 79,105,675,834.72
5. Step 5: Solve for x
   x = 79,105,675,834.72/191,215.69
6. Step 6: Final answer
   x = 413,698.67