Finding the Third Proportional to 353,168 and 766,540

Step by Step Solution

1. Step 1: Write the proportion equation
   353,168 : 766,540 = 766,540 : x
2. Step 2: Convert to fraction form
   353,168/766,540 = 766,540/x
3. Step 3: Cross multiply
   353,168x = 766,540 × 766,540
4. Step 4: Simplify right side
   353,168x = 587,583,571,600
5. Step 5: Solve for x
   x = 587,583,571,600/353,168
6. Step 6: Final answer
   x = 1,663,750.88