Finding the Third Proportional to 40,587 and 55,291

Step by Step Solution

1. Step 1: Write the proportion equation
   40,587 : 55,291 = 55,291 : x
2. Step 2: Convert to fraction form
   40,587/55,291 = 55,291/x
3. Step 3: Cross multiply
   40,587x = 55,291 × 55,291
4. Step 4: Simplify right side
   40,587x = 3,057,094,681
5. Step 5: Solve for x
   x = 3,057,094,681/40,587
6. Step 6: Final answer
   x = 75,322.02