Finding the Third Proportional to 131,881.50 and 273,109.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,881.50 : 273,109.50 = 273,109.50 : x
2. Step 2: Convert to fraction form
   131,881.50/273,109.50 = 273,109.50/x
3. Step 3: Cross multiply
   131,881.50x = 273,109.50 × 273,109.50
4. Step 4: Simplify right side
   131,881.50x = 74,588,798,990.25
5. Step 5: Solve for x
   x = 74,588,798,990.25/131,881.50
6. Step 6: Final answer
   x = 565,574.39