Finding the Third Proportional to 40,268.81 and 87,454.69

Step by Step Solution

1. Step 1: Write the proportion equation
   40,268.81 : 87,454.69 = 87,454.69 : x
2. Step 2: Convert to fraction form
   40,268.81/87,454.69 = 87,454.69/x
3. Step 3: Cross multiply
   40,268.81x = 87,454.69 × 87,454.69
4. Step 4: Simplify right side
   40,268.81x = 7,648,322,365.72
5. Step 5: Solve for x
   x = 7,648,322,365.72/40,268.81
6. Step 6: Final answer
   x = 189,931.66