Finding the Third Proportional to 338,653 and 740,273.50

Step by Step Solution

1. Step 1: Write the proportion equation
   338,653 : 740,273.50 = 740,273.50 : x
2. Step 2: Convert to fraction form
   338,653/740,273.50 = 740,273.50/x
3. Step 3: Cross multiply
   338,653x = 740,273.50 × 740,273.50
4. Step 4: Simplify right side
   338,653x = 548,004,854,802.25
5. Step 5: Solve for x
   x = 548,004,854,802.25/338,653
6. Step 6: Final answer
   x = 1,618,189.87