Finding the Third Proportional to 17,320 and 28,780

Step by Step Solution

1. Step 1: Write the proportion equation
   17,320 : 28,780 = 28,780 : x
2. Step 2: Convert to fraction form
   17,320/28,780 = 28,780/x
3. Step 3: Cross multiply
   17,320x = 28,780 × 28,780
4. Step 4: Simplify right side
   17,320x = 828,288,400
5. Step 5: Solve for x
   x = 828,288,400/17,320
6. Step 6: Final answer
   x = 47,822.66