Finding the Third Proportional to 98,618 and 216,007

Step by Step Solution

1. Step 1: Write the proportion equation
   98,618 : 216,007 = 216,007 : x
2. Step 2: Convert to fraction form
   98,618/216,007 = 216,007/x
3. Step 3: Cross multiply
   98,618x = 216,007 × 216,007
4. Step 4: Simplify right side
   98,618x = 46,659,024,049
5. Step 5: Solve for x
   x = 46,659,024,049/98,618
6. Step 6: Final answer
   x = 473,128.88