Finding the Third Proportional to 338,658 and 740,283.75

Step by Step Solution

1. Step 1: Write the proportion equation
   338,658 : 740,283.75 = 740,283.75 : x
2. Step 2: Convert to fraction form
   338,658/740,283.75 = 740,283.75/x
3. Step 3: Cross multiply
   338,658x = 740,283.75 × 740,283.75
4. Step 4: Simplify right side
   338,658x = 548,020,030,514.06
5. Step 5: Solve for x
   x = 548,020,030,514.06/338,658
6. Step 6: Final answer
   x = 1,618,210.79