Finding the Third Proportional to 540,908.50 and 856,515

Step by Step Solution

1. Step 1: Write the proportion equation
   540,908.50 : 856,515 = 856,515 : x
2. Step 2: Convert to fraction form
   540,908.50/856,515 = 856,515/x
3. Step 3: Cross multiply
   540,908.50x = 856,515 × 856,515
4. Step 4: Simplify right side
   540,908.50x = 733,617,945,225
5. Step 5: Solve for x
   x = 733,617,945,225/540,908.50
6. Step 6: Final answer
   x = 1,356,269.95