Finding the Third Proportional to 664,260 and 1,057,479

Step by Step Solution

1. Step 1: Write the proportion equation
   664,260 : 1,057,479 = 1,057,479 : x
2. Step 2: Convert to fraction form
   664,260/1,057,479 = 1,057,479/x
3. Step 3: Cross multiply
   664,260x = 1,057,479 × 1,057,479
4. Step 4: Simplify right side
   664,260x = 1,118,261,835,441
5. Step 5: Solve for x
   x = 1,118,261,835,441/664,260
6. Step 6: Final answer
   x = 1,683,470.08