Finding the Third Proportional to 644,484 and 1,382,312

Step by Step Solution

1. Step 1: Write the proportion equation
   644,484 : 1,382,312 = 1,382,312 : x
2. Step 2: Convert to fraction form
   644,484/1,382,312 = 1,382,312/x
3. Step 3: Cross multiply
   644,484x = 1,382,312 × 1,382,312
4. Step 4: Simplify right side
   644,484x = 1,910,786,465,344
5. Step 5: Solve for x
   x = 1,910,786,465,344/644,484
6. Step 6: Final answer
   x = 2,964,831.50