Finding the Third Proportional to 343,510 and 756,760

Step by Step Solution

1. Step 1: Write the proportion equation
   343,510 : 756,760 = 756,760 : x
2. Step 2: Convert to fraction form
   343,510/756,760 = 756,760/x
3. Step 3: Cross multiply
   343,510x = 756,760 × 756,760
4. Step 4: Simplify right side
   343,510x = 572,685,697,600
5. Step 5: Solve for x
   x = 572,685,697,600/343,510
6. Step 6: Final answer
   x = 1,667,158.74