Finding the Third Proportional to 91,713 and 131,731.50

Step by Step Solution

1. Step 1: Write the proportion equation
   91,713 : 131,731.50 = 131,731.50 : x
2. Step 2: Convert to fraction form
   91,713/131,731.50 = 131,731.50/x
3. Step 3: Cross multiply
   91,713x = 131,731.50 × 131,731.50
4. Step 4: Simplify right side
   91,713x = 17,353,188,092.25
5. Step 5: Solve for x
   x = 17,353,188,092.25/91,713
6. Step 6: Final answer
   x = 189,211.87