Finding the Third Proportional to 140,494 and 215,434.50

Step by Step Solution

1. Step 1: Write the proportion equation
   140,494 : 215,434.50 = 215,434.50 : x
2. Step 2: Convert to fraction form
   140,494/215,434.50 = 215,434.50/x
3. Step 3: Cross multiply
   140,494x = 215,434.50 × 215,434.50
4. Step 4: Simplify right side
   140,494x = 46,412,023,790.25
5. Step 5: Solve for x
   x = 46,412,023,790.25/140,494
6. Step 6: Final answer
   x = 330,348.80