Finding the Third Proportional to 42,012 and 90,918

Step by Step Solution

1. Step 1: Write the proportion equation
   42,012 : 90,918 = 90,918 : x
2. Step 2: Convert to fraction form
   42,012/90,918 = 90,918/x
3. Step 3: Cross multiply
   42,012x = 90,918 × 90,918
4. Step 4: Simplify right side
   42,012x = 8,266,082,724
5. Step 5: Solve for x
   x = 8,266,082,724/42,012
6. Step 6: Final answer
   x = 196,755.28