Finding the Third Proportional to 155,236.50 and 317,034

Step by Step Solution

1. Step 1: Write the proportion equation
   155,236.50 : 317,034 = 317,034 : x
2. Step 2: Convert to fraction form
   155,236.50/317,034 = 317,034/x
3. Step 3: Cross multiply
   155,236.50x = 317,034 × 317,034
4. Step 4: Simplify right side
   155,236.50x = 100,510,557,156
5. Step 5: Solve for x
   x = 100,510,557,156/155,236.50
6. Step 6: Final answer
   x = 647,467.30