Finding the Third Proportional to 27,718 and 42,508

Step by Step Solution

1. Step 1: Write the proportion equation
   27,718 : 42,508 = 42,508 : x
2. Step 2: Convert to fraction form
   27,718/42,508 = 42,508/x
3. Step 3: Cross multiply
   27,718x = 42,508 × 42,508
4. Step 4: Simplify right side
   27,718x = 1,806,930,064
5. Step 5: Solve for x
   x = 1,806,930,064/27,718
6. Step 6: Final answer
   x = 65,189.77