Finding the Third Proportional to 98,608 and 215,648

Step by Step Solution

1. Step 1: Write the proportion equation
   98,608 : 215,648 = 215,648 : x
2. Step 2: Convert to fraction form
   98,608/215,648 = 215,648/x
3. Step 3: Cross multiply
   98,608x = 215,648 × 215,648
4. Step 4: Simplify right side
   98,608x = 46,504,059,904
5. Step 5: Solve for x
   x = 46,504,059,904/98,608
6. Step 6: Final answer
   x = 471,605.35