Finding the Third Proportional to 315,182 and 674,648

Step by Step Solution

1. Step 1: Write the proportion equation
   315,182 : 674,648 = 674,648 : x
2. Step 2: Convert to fraction form
   315,182/674,648 = 674,648/x
3. Step 3: Cross multiply
   315,182x = 674,648 × 674,648
4. Step 4: Simplify right side
   315,182x = 455,149,923,904
5. Step 5: Solve for x
   x = 455,149,923,904/315,182
6. Step 6: Final answer
   x = 1,444,086.03