Finding the Third Proportional to 166,707 and 345,078

Step by Step Solution

1. Step 1: Write the proportion equation
   166,707 : 345,078 = 345,078 : x
2. Step 2: Convert to fraction form
   166,707/345,078 = 345,078/x
3. Step 3: Cross multiply
   166,707x = 345,078 × 345,078
4. Step 4: Simplify right side
   166,707x = 119,078,826,084
5. Step 5: Solve for x
   x = 119,078,826,084/166,707
6. Step 6: Final answer
   x = 714,300.10