Finding the Third Proportional to 140,452 and 300,586

Step by Step Solution

1. Step 1: Write the proportion equation
   140,452 : 300,586 = 300,586 : x
2. Step 2: Convert to fraction form
   140,452/300,586 = 300,586/x
3. Step 3: Cross multiply
   140,452x = 300,586 × 300,586
4. Step 4: Simplify right side
   140,452x = 90,351,943,396
5. Step 5: Solve for x
   x = 90,351,943,396/140,452
6. Step 6: Final answer
   x = 643,294.10