Finding the Third Proportional to 141,704 and 309,760

Step by Step Solution

1. Step 1: Write the proportion equation
   141,704 : 309,760 = 309,760 : x
2. Step 2: Convert to fraction form
   141,704/309,760 = 309,760/x
3. Step 3: Cross multiply
   141,704x = 309,760 × 309,760
4. Step 4: Simplify right side
   141,704x = 95,951,257,600
5. Step 5: Solve for x
   x = 95,951,257,600/141,704
6. Step 6: Final answer
   x = 677,124.55