Finding the Third Proportional to 142,791 and 317,494

Step by Step Solution

1. Step 1: Write the proportion equation
   142,791 : 317,494 = 317,494 : x
2. Step 2: Convert to fraction form
   142,791/317,494 = 317,494/x
3. Step 3: Cross multiply
   142,791x = 317,494 × 317,494
4. Step 4: Simplify right side
   142,791x = 100,802,440,036
5. Step 5: Solve for x
   x = 100,802,440,036/142,791
6. Step 6: Final answer
   x = 705,943.93