Finding the Third Proportional to 141,717 and 311,078.63

Step by Step Solution

1. Step 1: Write the proportion equation
   141,717 : 311,078.63 = 311,078.63 : x
2. Step 2: Convert to fraction form
   141,717/311,078.63 = 311,078.63/x
3. Step 3: Cross multiply
   141,717x = 311,078.63 × 311,078.63
4. Step 4: Simplify right side
   141,717x = 96,769,910,931.89
5. Step 5: Solve for x
   x = 96,769,910,931.89/141,717
6. Step 6: Final answer
   x = 682,839.12