Finding the Third Proportional to 646.50 and 1,401

Step by Step Solution

1. Step 1: Write the proportion equation
   646.50 : 1,401 = 1,401 : x
2. Step 2: Convert to fraction form
   646.50/1,401 = 1,401/x
3. Step 3: Cross multiply
   646.50x = 1,401 × 1,401
4. Step 4: Simplify right side
   646.50x = 1,962,801
5. Step 5: Solve for x
   x = 1,962,801/646.50
6. Step 6: Final answer
   x = 3,036.04