Finding the Third Proportional to 147,157.25 and 317,836

Step by Step Solution

1. Step 1: Write the proportion equation
   147,157.25 : 317,836 = 317,836 : x
2. Step 2: Convert to fraction form
   147,157.25/317,836 = 317,836/x
3. Step 3: Cross multiply
   147,157.25x = 317,836 × 317,836
4. Step 4: Simplify right side
   147,157.25x = 101,019,722,896
5. Step 5: Solve for x
   x = 101,019,722,896/147,157.25
6. Step 6: Final answer
   x = 686,474.66