Finding the Third Proportional to 4,276,317 and 8,622,618

Step by Step Solution

1. Step 1: Write the proportion equation
   4,276,317 : 8,622,618 = 8,622,618 : x
2. Step 2: Convert to fraction form
   4,276,317/8,622,618 = 8,622,618/x
3. Step 3: Cross multiply
   4,276,317x = 8,622,618 × 8,622,618
4. Step 4: Simplify right side
   4,276,317x = 74,349,541,173,924
5. Step 5: Solve for x
   x = 74,349,541,173,924/4,276,317
6. Step 6: Final answer
   x = 17,386,349.32