Finding the Third Proportional to 338,638.50 and 740,241

Step by Step Solution

1. Step 1: Write the proportion equation
   338,638.50 : 740,241 = 740,241 : x
2. Step 2: Convert to fraction form
   338,638.50/740,241 = 740,241/x
3. Step 3: Cross multiply
   338,638.50x = 740,241 × 740,241
4. Step 4: Simplify right side
   338,638.50x = 547,956,738,081
5. Step 5: Solve for x
   x = 547,956,738,081/338,638.50
6. Step 6: Final answer
   x = 1,618,117.07