Finding the Third Proportional to 644,562 and 1,382,388

Step by Step Solution

1. Step 1: Write the proportion equation
   644,562 : 1,382,388 = 1,382,388 : x
2. Step 2: Convert to fraction form
   644,562/1,382,388 = 1,382,388/x
3. Step 3: Cross multiply
   644,562x = 1,382,388 × 1,382,388
4. Step 4: Simplify right side
   644,562x = 1,910,996,582,544
5. Step 5: Solve for x
   x = 1,910,996,582,544/644,562
6. Step 6: Final answer
   x = 2,964,798.70