Finding the Third Proportional to 131,838 and 273,021.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,838 : 273,021.50 = 273,021.50 : x
2. Step 2: Convert to fraction form
   131,838/273,021.50 = 273,021.50/x
3. Step 3: Cross multiply
   131,838x = 273,021.50 × 273,021.50
4. Step 4: Simplify right side
   131,838x = 74,540,739,462.25
5. Step 5: Solve for x
   x = 74,540,739,462.25/131,838
6. Step 6: Final answer
   x = 565,396.47