Finding the Third Proportional to 9,886.50 and 21,618

Step by Step Solution

1. Step 1: Write the proportion equation
   9,886.50 : 21,618 = 21,618 : x
2. Step 2: Convert to fraction form
   9,886.50/21,618 = 21,618/x
3. Step 3: Cross multiply
   9,886.50x = 21,618 × 21,618
4. Step 4: Simplify right side
   9,886.50x = 467,337,924
5. Step 5: Solve for x
   x = 467,337,924/9,886.50
6. Step 6: Final answer
   x = 47,270.31