Finding the Third Proportional to 65,716.25 and 143,594.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,716.25 : 143,594.50 = 143,594.50 : x
2. Step 2: Convert to fraction form
   65,716.25/143,594.50 = 143,594.50/x
3. Step 3: Cross multiply
   65,716.25x = 143,594.50 × 143,594.50
4. Step 4: Simplify right side
   65,716.25x = 20,619,380,430.25
5. Step 5: Solve for x
   x = 20,619,380,430.25/65,716.25
6. Step 6: Final answer
   x = 313,763.80