Finding the Third Proportional to 65,622.50 and 143,273.50

Step by Step Solution

1. Step 1: Write the proportion equation
   65,622.50 : 143,273.50 = 143,273.50 : x
2. Step 2: Convert to fraction form
   65,622.50/143,273.50 = 143,273.50/x
3. Step 3: Cross multiply
   65,622.50x = 143,273.50 × 143,273.50
4. Step 4: Simplify right side
   65,622.50x = 20,527,295,802.25
5. Step 5: Solve for x
   x = 20,527,295,802.25/65,622.50
6. Step 6: Final answer
   x = 312,808.80