Finding the Third Proportional to 2,197,972 and 4,686,266

Step by Step Solution

1. Step 1: Write the proportion equation
   2,197,972 : 4,686,266 = 4,686,266 : x
2. Step 2: Convert to fraction form
   2,197,972/4,686,266 = 4,686,266/x
3. Step 3: Cross multiply
   2,197,972x = 4,686,266 × 4,686,266
4. Step 4: Simplify right side
   2,197,972x = 21,961,089,022,756
5. Step 5: Solve for x
   x = 21,961,089,022,756/2,197,972
6. Step 6: Final answer
   x = 9,991,523.56