Finding the Third Proportional to 338,919 and 738,118.50

Step by Step Solution

1. Step 1: Write the proportion equation
   338,919 : 738,118.50 = 738,118.50 : x
2. Step 2: Convert to fraction form
   338,919/738,118.50 = 738,118.50/x
3. Step 3: Cross multiply
   338,919x = 738,118.50 × 738,118.50
4. Step 4: Simplify right side
   338,919x = 544,818,920,042.25
5. Step 5: Solve for x
   x = 544,818,920,042.25/338,919
6. Step 6: Final answer
   x = 1,607,519.55