Finding the Third Proportional to 65,636.25 and 143,980.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,636.25 : 143,980.50 = 143,980.50 : x
2. Step 2: Convert to fraction form
   65,636.25/143,980.50 = 143,980.50/x
3. Step 3: Cross multiply
   65,636.25x = 143,980.50 × 143,980.50
4. Step 4: Simplify right side
   65,636.25x = 20,730,384,380.25
5. Step 5: Solve for x
   x = 20,730,384,380.25/65,636.25
6. Step 6: Final answer
   x = 315,837.43