Finding the Third Proportional to 40,336 and 56,418

Step by Step Solution

1. Step 1: Write the proportion equation
   40,336 : 56,418 = 56,418 : x
2. Step 2: Convert to fraction form
   40,336/56,418 = 56,418/x
3. Step 3: Cross multiply
   40,336x = 56,418 × 56,418
4. Step 4: Simplify right side
   40,336x = 3,182,990,724
5. Step 5: Solve for x
   x = 3,182,990,724/40,336
6. Step 6: Final answer
   x = 78,911.91