Finding the Third Proportional to 268,153.50 and 426,834

Step by Step Solution

1. Step 1: Write the proportion equation
   268,153.50 : 426,834 = 426,834 : x
2. Step 2: Convert to fraction form
   268,153.50/426,834 = 426,834/x
3. Step 3: Cross multiply
   268,153.50x = 426,834 × 426,834
4. Step 4: Simplify right side
   268,153.50x = 182,187,263,556
5. Step 5: Solve for x
   x = 182,187,263,556/268,153.50
6. Step 6: Final answer
   x = 679,414.08