Finding the Third Proportional to 20,618 and 31,118

Step by Step Solution

1. Step 1: Write the proportion equation
   20,618 : 31,118 = 31,118 : x
2. Step 2: Convert to fraction form
   20,618/31,118 = 31,118/x
3. Step 3: Cross multiply
   20,618x = 31,118 × 31,118
4. Step 4: Simplify right side
   20,618x = 968,329,924
5. Step 5: Solve for x
   x = 968,329,924/20,618
6. Step 6: Final answer
   x = 46,965.27