Finding the Third Proportional to 40,361.63 and 55,405.69

Step by Step Solution

1. Step 1: Write the proportion equation
   40,361.63 : 55,405.69 = 55,405.69 : x
2. Step 2: Convert to fraction form
   40,361.63/55,405.69 = 55,405.69/x
3. Step 3: Cross multiply
   40,361.63x = 55,405.69 × 55,405.69
4. Step 4: Simplify right side
   40,361.63x = 3,069,790,207.35
5. Step 5: Solve for x
   x = 3,069,790,207.35/40,361.63
6. Step 6: Final answer
   x = 76,057.15