Finding the Third Proportional to 140,591.50 and 217,756

Step by Step Solution

1. Step 1: Write the proportion equation
   140,591.50 : 217,756 = 217,756 : x
2. Step 2: Convert to fraction form
   140,591.50/217,756 = 217,756/x
3. Step 3: Cross multiply
   140,591.50x = 217,756 × 217,756
4. Step 4: Simplify right side
   140,591.50x = 47,417,675,536
5. Step 5: Solve for x
   x = 47,417,675,536/140,591.50
6. Step 6: Final answer
   x = 337,272.71