Finding the Third Proportional to 343,508.50 and 756,758

Step by Step Solution

1. Step 1: Write the proportion equation
   343,508.50 : 756,758 = 756,758 : x
2. Step 2: Convert to fraction form
   343,508.50/756,758 = 756,758/x
3. Step 3: Cross multiply
   343,508.50x = 756,758 × 756,758
4. Step 4: Simplify right side
   343,508.50x = 572,682,670,564
5. Step 5: Solve for x
   x = 572,682,670,564/343,508.50
6. Step 6: Final answer
   x = 1,667,157.20