Finding the Third Proportional to 644,576 and 1,382,412

Step by Step Solution

1. Step 1: Write the proportion equation
   644,576 : 1,382,412 = 1,382,412 : x
2. Step 2: Convert to fraction form
   644,576/1,382,412 = 1,382,412/x
3. Step 3: Cross multiply
   644,576x = 1,382,412 × 1,382,412
4. Step 4: Simplify right side
   644,576x = 1,911,062,937,744
5. Step 5: Solve for x
   x = 1,911,062,937,744/644,576
6. Step 6: Final answer
   x = 2,964,837.25