Finding the Third Proportional to 19,819.69 and 38,718

Step by Step Solution

1. Step 1: Write the proportion equation
   19,819.69 : 38,718 = 38,718 : x
2. Step 2: Convert to fraction form
   19,819.69/38,718 = 38,718/x
3. Step 3: Cross multiply
   19,819.69x = 38,718 × 38,718
4. Step 4: Simplify right side
   19,819.69x = 1,499,083,524
5. Step 5: Solve for x
   x = 1,499,083,524/19,819.69
6. Step 6: Final answer
   x = 75,636.08