Finding the Third Proportional to 166,418 and 359,078

Step by Step Solution

1. Step 1: Write the proportion equation
   166,418 : 359,078 = 359,078 : x
2. Step 2: Convert to fraction form
   166,418/359,078 = 359,078/x
3. Step 3: Cross multiply
   166,418x = 359,078 × 359,078
4. Step 4: Simplify right side
   166,418x = 128,937,010,084
5. Step 5: Solve for x
   x = 128,937,010,084/166,418
6. Step 6: Final answer
   x = 774,778.03