Finding the Third Proportional to 91,707 and 131,722.50

Step by Step Solution

1. Step 1: Write the proportion equation
   91,707 : 131,722.50 = 131,722.50 : x
2. Step 2: Convert to fraction form
   91,707/131,722.50 = 131,722.50/x
3. Step 3: Cross multiply
   91,707x = 131,722.50 × 131,722.50
4. Step 4: Simplify right side
   91,707x = 17,350,817,006.25
5. Step 5: Solve for x
   x = 17,350,817,006.25/91,707
6. Step 6: Final answer
   x = 189,198.39