Finding the Third Proportional to 644,017.50 and 946,324.50

Step by Step Solution

1. Step 1: Write the proportion equation
   644,017.50 : 946,324.50 = 946,324.50 : x
2. Step 2: Convert to fraction form
   644,017.50/946,324.50 = 946,324.50/x
3. Step 3: Cross multiply
   644,017.50x = 946,324.50 × 946,324.50
4. Step 4: Simplify right side
   644,017.50x = 895,530,059,300.25
5. Step 5: Solve for x
   x = 895,530,059,300.25/644,017.50
6. Step 6: Final answer
   x = 1,390,536.84