Finding the Third Proportional to 134,488.50 and 317,017.50

Step by Step Solution

1. Step 1: Write the proportion equation
   134,488.50 : 317,017.50 = 317,017.50 : x
2. Step 2: Convert to fraction form
   134,488.50/317,017.50 = 317,017.50/x
3. Step 3: Cross multiply
   134,488.50x = 317,017.50 × 317,017.50
4. Step 4: Simplify right side
   134,488.50x = 100,500,095,306.25
5. Step 5: Solve for x
   x = 100,500,095,306.25/134,488.50
6. Step 6: Final answer
   x = 747,276.50