Finding the Third Proportional to 145,659.94 and 317,799

Step by Step Solution

1. Step 1: Write the proportion equation
   145,659.94 : 317,799 = 317,799 : x
2. Step 2: Convert to fraction form
   145,659.94/317,799 = 317,799/x
3. Step 3: Cross multiply
   145,659.94x = 317,799 × 317,799
4. Step 4: Simplify right side
   145,659.94x = 100,996,204,401
5. Step 5: Solve for x
   x = 100,996,204,401/145,659.94
6. Step 6: Final answer
   x = 693,369.82