Finding the Third Proportional to 140,304 and 300,531

Step by Step Solution

1. Step 1: Write the proportion equation
   140,304 : 300,531 = 300,531 : x
2. Step 2: Convert to fraction form
   140,304/300,531 = 300,531/x
3. Step 3: Cross multiply
   140,304x = 300,531 × 300,531
4. Step 4: Simplify right side
   140,304x = 90,318,881,961
5. Step 5: Solve for x
   x = 90,318,881,961/140,304
6. Step 6: Final answer
   x = 643,737.04