Finding the Third Proportional to 417,215.50 and 856,549

Step by Step Solution

1. Step 1: Write the proportion equation
   417,215.50 : 856,549 = 856,549 : x
2. Step 2: Convert to fraction form
   417,215.50/856,549 = 856,549/x
3. Step 3: Cross multiply
   417,215.50x = 856,549 × 856,549
4. Step 4: Simplify right side
   417,215.50x = 733,676,189,401
5. Step 5: Solve for x
   x = 733,676,189,401/417,215.50
6. Step 6: Final answer
   x = 1,758,506.55