Finding the Third Proportional to 155,854.50 and 340,870.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,854.50 : 340,870.50 = 340,870.50 : x
2. Step 2: Convert to fraction form
   155,854.50/340,870.50 = 340,870.50/x
3. Step 3: Cross multiply
   155,854.50x = 340,870.50 × 340,870.50
4. Step 4: Simplify right side
   155,854.50x = 116,192,697,770.25
5. Step 5: Solve for x
   x = 116,192,697,770.25/155,854.50
6. Step 6: Final answer
   x = 745,520.33