Finding the Third Proportional to 21,871,144 and 51,100,856

Step by Step Solution

1. Step 1: Write the proportion equation
   21,871,144 : 51,100,856 = 51,100,856 : x
2. Step 2: Convert to fraction form
   21,871,144/51,100,856 = 51,100,856/x
3. Step 3: Cross multiply
   21,871,144x = 51,100,856 × 51,100,856
4. Step 4: Simplify right side
   21,871,144x = 2,611,297,483,932,736
5. Step 5: Solve for x
   x = 2,611,297,483,932,736/21,871,144
6. Step 6: Final answer
   x = 119,394,645.47