Finding the Third Proportional to 155,776.50 and 338,890.50

Step by Step Solution

1. Step 1: Write the proportion equation
   155,776.50 : 338,890.50 = 338,890.50 : x
2. Step 2: Convert to fraction form
   155,776.50/338,890.50 = 338,890.50/x
3. Step 3: Cross multiply
   155,776.50x = 338,890.50 × 338,890.50
4. Step 4: Simplify right side
   155,776.50x = 114,846,770,990.25
5. Step 5: Solve for x
   x = 114,846,770,990.25/155,776.50
6. Step 6: Final answer
   x = 737,253.51