Finding the Third Proportional to 65,176.50 and 142,809

Step by Step Solution

1. Step 1: Write the proportion equation
   65,176.50 : 142,809 = 142,809 : x
2. Step 2: Convert to fraction form
   65,176.50/142,809 = 142,809/x
3. Step 3: Cross multiply
   65,176.50x = 142,809 × 142,809
4. Step 4: Simplify right side
   65,176.50x = 20,394,410,481
5. Step 5: Solve for x
   x = 20,394,410,481/65,176.50
6. Step 6: Final answer
   x = 312,910.49