Finding the Third Proportional to 154,730.25 and 338,620.50

Step by Step Solution

1. Step 1: Write the proportion equation
   154,730.25 : 338,620.50 = 338,620.50 : x
2. Step 2: Convert to fraction form
   154,730.25/338,620.50 = 338,620.50/x
3. Step 3: Cross multiply
   154,730.25x = 338,620.50 × 338,620.50
4. Step 4: Simplify right side
   154,730.25x = 114,663,843,020.25
5. Step 5: Solve for x
   x = 114,663,843,020.25/154,730.25
6. Step 6: Final answer
   x = 741,056.41