Finding the Third Proportional to 91,108 and 199,766

Step by Step Solution

1. Step 1: Write the proportion equation
   91,108 : 199,766 = 199,766 : x
2. Step 2: Convert to fraction form
   91,108/199,766 = 199,766/x
3. Step 3: Cross multiply
   91,108x = 199,766 × 199,766
4. Step 4: Simplify right side
   91,108x = 39,906,454,756
5. Step 5: Solve for x
   x = 39,906,454,756/91,108
6. Step 6: Final answer
   x = 438,012.63