Finding the Third Proportional to 155,951 and 317,553.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,951 : 317,553.50 = 317,553.50 : x
2. Step 2: Convert to fraction form
   155,951/317,553.50 = 317,553.50/x
3. Step 3: Cross multiply
   155,951x = 317,553.50 × 317,553.50
4. Step 4: Simplify right side
   155,951x = 100,840,225,362.25
5. Step 5: Solve for x
   x = 100,840,225,362.25/155,951
6. Step 6: Final answer
   x = 646,614.80