Finding the Third Proportional to 40,178 and 58,443

Step by Step Solution

1. Step 1: Write the proportion equation
   40,178 : 58,443 = 58,443 : x
2. Step 2: Convert to fraction form
   40,178/58,443 = 58,443/x
3. Step 3: Cross multiply
   40,178x = 58,443 × 58,443
4. Step 4: Simplify right side
   40,178x = 3,415,584,249
5. Step 5: Solve for x
   x = 3,415,584,249/40,178
6. Step 6: Final answer
   x = 85,011.31