Finding the Third Proportional to 149,258 and 231,099

Step by Step Solution

1. Step 1: Write the proportion equation
   149,258 : 231,099 = 231,099 : x
2. Step 2: Convert to fraction form
   149,258/231,099 = 231,099/x
3. Step 3: Cross multiply
   149,258x = 231,099 × 231,099
4. Step 4: Simplify right side
   149,258x = 53,406,747,801
5. Step 5: Solve for x
   x = 53,406,747,801/149,258
6. Step 6: Final answer
   x = 357,814.98