Finding the Third Proportional to 399,613.50 and 856,227

Step by Step Solution

1. Step 1: Write the proportion equation
   399,613.50 : 856,227 = 856,227 : x
2. Step 2: Convert to fraction form
   399,613.50/856,227 = 856,227/x
3. Step 3: Cross multiply
   399,613.50x = 856,227 × 856,227
4. Step 4: Simplify right side
   399,613.50x = 733,124,675,529
5. Step 5: Solve for x
   x = 733,124,675,529/399,613.50
6. Step 6: Final answer
   x = 1,834,584.36