Finding the Third Proportional to 140,355.47 and 215,738.72

Step by Step Solution

1. Step 1: Write the proportion equation
   140,355.47 : 215,738.72 = 215,738.72 : x
2. Step 2: Convert to fraction form
   140,355.47/215,738.72 = 215,738.72/x
3. Step 3: Cross multiply
   140,355.47x = 215,738.72 × 215,738.72
4. Step 4: Simplify right side
   140,355.47x = 46,543,194,767.89
5. Step 5: Solve for x
   x = 46,543,194,767.89/140,355.47
6. Step 6: Final answer
   x = 331,609.41