Finding the Third Proportional to 42,012 and 87,918

Step by Step Solution

1. Step 1: Write the proportion equation
   42,012 : 87,918 = 87,918 : x
2. Step 2: Convert to fraction form
   42,012/87,918 = 87,918/x
3. Step 3: Cross multiply
   42,012x = 87,918 × 87,918
4. Step 4: Simplify right side
   42,012x = 7,729,574,724
5. Step 5: Solve for x
   x = 7,729,574,724/42,012
6. Step 6: Final answer
   x = 183,984.93