Finding the Third Proportional to 40,855 and 56,260

Step by Step Solution

1. Step 1: Write the proportion equation
   40,855 : 56,260 = 56,260 : x
2. Step 2: Convert to fraction form
   40,855/56,260 = 56,260/x
3. Step 3: Cross multiply
   40,855x = 56,260 × 56,260
4. Step 4: Simplify right side
   40,855x = 3,165,187,600
5. Step 5: Solve for x
   x = 3,165,187,600/40,855
6. Step 6: Final answer
   x = 77,473.69