Finding the Third Proportional to 19,718 and 42,718

Step by Step Solution

1. Step 1: Write the proportion equation
   19,718 : 42,718 = 42,718 : x
2. Step 2: Convert to fraction form
   19,718/42,718 = 42,718/x
3. Step 3: Cross multiply
   19,718x = 42,718 × 42,718
4. Step 4: Simplify right side
   19,718x = 1,824,827,524
5. Step 5: Solve for x
   x = 1,824,827,524/19,718
6. Step 6: Final answer
   x = 92,546.28