Finding the Third Proportional to 19,515 and 42,918

Step by Step Solution

1. Step 1: Write the proportion equation
   19,515 : 42,918 = 42,918 : x
2. Step 2: Convert to fraction form
   19,515/42,918 = 42,918/x
3. Step 3: Cross multiply
   19,515x = 42,918 × 42,918
4. Step 4: Simplify right side
   19,515x = 1,841,954,724
5. Step 5: Solve for x
   x = 1,841,954,724/19,515
6. Step 6: Final answer
   x = 94,386.61