Finding the Third Proportional to 66,367.50 and 143,300.25

Step by Step Solution

1. Step 1: Write the proportion equation
   66,367.50 : 143,300.25 = 143,300.25 : x
2. Step 2: Convert to fraction form
   66,367.50/143,300.25 = 143,300.25/x
3. Step 3: Cross multiply
   66,367.50x = 143,300.25 × 143,300.25
4. Step 4: Simplify right side
   66,367.50x = 20,534,961,650.06
5. Step 5: Solve for x
   x = 20,534,961,650.06/66,367.50
6. Step 6: Final answer
   x = 309,412.92