Finding the Third Proportional to 143,257.50 and 303,588

Step by Step Solution

1. Step 1: Write the proportion equation
   143,257.50 : 303,588 = 303,588 : x
2. Step 2: Convert to fraction form
   143,257.50/303,588 = 303,588/x
3. Step 3: Cross multiply
   143,257.50x = 303,588 × 303,588
4. Step 4: Simplify right side
   143,257.50x = 92,165,673,744
5. Step 5: Solve for x
   x = 92,165,673,744/143,257.50
6. Step 6: Final answer
   x = 643,356.71