Finding the Third Proportional to 143,189.63 and 282,766.88

Step by Step Solution

1. Step 1: Write the proportion equation
   143,189.63 : 282,766.88 = 282,766.88 : x
2. Step 2: Convert to fraction form
   143,189.63/282,766.88 = 282,766.88/x
3. Step 3: Cross multiply
   143,189.63x = 282,766.88 × 282,766.88
4. Step 4: Simplify right side
   143,189.63x = 79,957,105,597.27
5. Step 5: Solve for x
   x = 79,957,105,597.27/143,189.63
6. Step 6: Final answer
   x = 558,400.13