Finding the Third Proportional to 140,450 and 300,582

Step by Step Solution

1. Step 1: Write the proportion equation
   140,450 : 300,582 = 300,582 : x
2. Step 2: Convert to fraction form
   140,450/300,582 = 300,582/x
3. Step 3: Cross multiply
   140,450x = 300,582 × 300,582
4. Step 4: Simplify right side
   140,450x = 90,349,538,724
5. Step 5: Solve for x
   x = 90,349,538,724/140,450
6. Step 6: Final answer
   x = 643,286.14