Finding the Third Proportional to 644,007 and 946,314

Step by Step Solution

1. Step 1: Write the proportion equation
   644,007 : 946,314 = 946,314 : x
2. Step 2: Convert to fraction form
   644,007/946,314 = 946,314/x
3. Step 3: Cross multiply
   644,007x = 946,314 × 946,314
4. Step 4: Simplify right side
   644,007x = 895,510,186,596
5. Step 5: Solve for x
   x = 895,510,186,596/644,007
6. Step 6: Final answer
   x = 1,390,528.65