Finding the Third Proportional to 3,945,395 and 8,490,027

Step by Step Solution

1. Step 1: Write the proportion equation
   3,945,395 : 8,490,027 = 8,490,027 : x
2. Step 2: Convert to fraction form
   3,945,395/8,490,027 = 8,490,027/x
3. Step 3: Cross multiply
   3,945,395x = 8,490,027 × 8,490,027
4. Step 4: Simplify right side
   3,945,395x = 72,080,558,460,729
5. Step 5: Solve for x
   x = 72,080,558,460,729/3,945,395
6. Step 6: Final answer
   x = 18,269,541.70