Finding the Third Proportional to 644,004 and 946,309.50

Step by Step Solution

1. Step 1: Write the proportion equation
   644,004 : 946,309.50 = 946,309.50 : x
2. Step 2: Convert to fraction form
   644,004/946,309.50 = 946,309.50/x
3. Step 3: Cross multiply
   644,004x = 946,309.50 × 946,309.50
4. Step 4: Simplify right side
   644,004x = 895,501,669,790.25
5. Step 5: Solve for x
   x = 895,501,669,790.25/644,004
6. Step 6: Final answer
   x = 1,390,521.91