Finding the Third Proportional to 65,571.75 and 142,159.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,571.75 : 142,159.50 = 142,159.50 : x
2. Step 2: Convert to fraction form
   65,571.75/142,159.50 = 142,159.50/x
3. Step 3: Cross multiply
   65,571.75x = 142,159.50 × 142,159.50
4. Step 4: Simplify right side
   65,571.75x = 20,209,323,440.25
5. Step 5: Solve for x
   x = 20,209,323,440.25/65,571.75
6. Step 6: Final answer
   x = 308,201.68