Finding the Third Proportional to 131,687 and 310,738.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,687 : 310,738.50 = 310,738.50 : x
2. Step 2: Convert to fraction form
   131,687/310,738.50 = 310,738.50/x
3. Step 3: Cross multiply
   131,687x = 310,738.50 × 310,738.50
4. Step 4: Simplify right side
   131,687x = 96,558,415,382.25
5. Step 5: Solve for x
   x = 96,558,415,382.25/131,687
6. Step 6: Final answer
   x = 733,241.82