Finding the Third Proportional to 166,274 and 359,172

Step by Step Solution

1. Step 1: Write the proportion equation
   166,274 : 359,172 = 359,172 : x
2. Step 2: Convert to fraction form
   166,274/359,172 = 359,172/x
3. Step 3: Cross multiply
   166,274x = 359,172 × 359,172
4. Step 4: Simplify right side
   166,274x = 129,004,525,584
5. Step 5: Solve for x
   x = 129,004,525,584/166,274
6. Step 6: Final answer
   x = 775,855.07