Finding the Third Proportional to 42,018 and 56,064

Step by Step Solution

1. Step 1: Write the proportion equation
   42,018 : 56,064 = 56,064 : x
2. Step 2: Convert to fraction form
   42,018/56,064 = 56,064/x
3. Step 3: Cross multiply
   42,018x = 56,064 × 56,064
4. Step 4: Simplify right side
   42,018x = 3,143,172,096
5. Step 5: Solve for x
   x = 3,143,172,096/42,018
6. Step 6: Final answer
   x = 74,805.37