Finding the Third Proportional to 125,365.50 and 261,099

Step by Step Solution

1. Step 1: Write the proportion equation
   125,365.50 : 261,099 = 261,099 : x
2. Step 2: Convert to fraction form
   125,365.50/261,099 = 261,099/x
3. Step 3: Cross multiply
   125,365.50x = 261,099 × 261,099
4. Step 4: Simplify right side
   125,365.50x = 68,172,687,801
5. Step 5: Solve for x
   x = 68,172,687,801/125,365.50
6. Step 6: Final answer
   x = 543,791.46