Finding the Third Proportional to 65,799 and 143,140.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,799 : 143,140.50 = 143,140.50 : x
2. Step 2: Convert to fraction form
   65,799/143,140.50 = 143,140.50/x
3. Step 3: Cross multiply
   65,799x = 143,140.50 × 143,140.50
4. Step 4: Simplify right side
   65,799x = 20,489,202,740.25
5. Step 5: Solve for x
   x = 20,489,202,740.25/65,799
6. Step 6: Final answer
   x = 311,390.79