Finding the Third Proportional to 140,818.50 and 288,198

Step by Step Solution

1. Step 1: Write the proportion equation
   140,818.50 : 288,198 = 288,198 : x
2. Step 2: Convert to fraction form
   140,818.50/288,198 = 288,198/x
3. Step 3: Cross multiply
   140,818.50x = 288,198 × 288,198
4. Step 4: Simplify right side
   140,818.50x = 83,058,087,204
5. Step 5: Solve for x
   x = 83,058,087,204/140,818.50
6. Step 6: Final answer
   x = 589,823.69