Finding the Third Proportional to 91,990.69 and 131,356.69

Step by Step Solution

1. Step 1: Write the proportion equation
   91,990.69 : 131,356.69 = 131,356.69 : x
2. Step 2: Convert to fraction form
   91,990.69/131,356.69 = 131,356.69/x
3. Step 3: Cross multiply
   91,990.69x = 131,356.69 × 131,356.69
4. Step 4: Simplify right side
   91,990.69x = 17,254,579,350.97
5. Step 5: Solve for x
   x = 17,254,579,350.97/91,990.69
6. Step 6: Final answer
   x = 187,568.76