Finding the Third Proportional to 664,304 and 1,057,538

Step by Step Solution

1. Step 1: Write the proportion equation
   664,304 : 1,057,538 = 1,057,538 : x
2. Step 2: Convert to fraction form
   664,304/1,057,538 = 1,057,538/x
3. Step 3: Cross multiply
   664,304x = 1,057,538 × 1,057,538
4. Step 4: Simplify right side
   664,304x = 1,118,386,621,444
5. Step 5: Solve for x
   x = 1,118,386,621,444/664,304
6. Step 6: Final answer
   x = 1,683,546.42