Finding the Third Proportional to 66,890.44 and 91,723.97

Step by Step Solution

1. Step 1: Write the proportion equation
   66,890.44 : 91,723.97 = 91,723.97 : x
2. Step 2: Convert to fraction form
   66,890.44/91,723.97 = 91,723.97/x
3. Step 3: Cross multiply
   66,890.44x = 91,723.97 × 91,723.97
4. Step 4: Simplify right side
   66,890.44x = 8,413,286,443.25
5. Step 5: Solve for x
   x = 8,413,286,443.25/66,890.44
6. Step 6: Final answer
   x = 125,777.12