Finding the Third Proportional to 40,356 and 55,396

Step by Step Solution

1. Step 1: Write the proportion equation
   40,356 : 55,396 = 55,396 : x
2. Step 2: Convert to fraction form
   40,356/55,396 = 55,396/x
3. Step 3: Cross multiply
   40,356x = 55,396 × 55,396
4. Step 4: Simplify right side
   40,356x = 3,068,716,816
5. Step 5: Solve for x
   x = 3,068,716,816/40,356
6. Step 6: Final answer
   x = 76,041.15