Finding the Third Proportional to 9,451,728 and 20,621,131

Step by Step Solution

1. Step 1: Write the proportion equation
   9,451,728 : 20,621,131 = 20,621,131 : x
2. Step 2: Convert to fraction form
   9,451,728/20,621,131 = 20,621,131/x
3. Step 3: Cross multiply
   9,451,728x = 20,621,131 × 20,621,131
4. Step 4: Simplify right side
   9,451,728x = 425,231,043,719,161
5. Step 5: Solve for x
   x = 425,231,043,719,161/9,451,728
6. Step 6: Final answer
   x = 44,989,767.34