Finding the Third Proportional to 19,660 and 30,488

Step by Step Solution

1. Step 1: Write the proportion equation
   19,660 : 30,488 = 30,488 : x
2. Step 2: Convert to fraction form
   19,660/30,488 = 30,488/x
3. Step 3: Cross multiply
   19,660x = 30,488 × 30,488
4. Step 4: Simplify right side
   19,660x = 929,518,144
5. Step 5: Solve for x
   x = 929,518,144/19,660
6. Step 6: Final answer
   x = 47,279.66