Finding the Third Proportional to 166,922 and 258,857.50

Step by Step Solution

1. Step 1: Write the proportion equation
   166,922 : 258,857.50 = 258,857.50 : x
2. Step 2: Convert to fraction form
   166,922/258,857.50 = 258,857.50/x
3. Step 3: Cross multiply
   166,922x = 258,857.50 × 258,857.50
4. Step 4: Simplify right side
   166,922x = 67,007,205,306.25
5. Step 5: Solve for x
   x = 67,007,205,306.25/166,922
6. Step 6: Final answer
   x = 401,428.24