Finding the Third Proportional to 2,105,991 and 4,548,213

Step by Step Solution

1. Step 1: Write the proportion equation
   2,105,991 : 4,548,213 = 4,548,213 : x
2. Step 2: Convert to fraction form
   2,105,991/4,548,213 = 4,548,213/x
3. Step 3: Cross multiply
   2,105,991x = 4,548,213 × 4,548,213
4. Step 4: Simplify right side
   2,105,991x = 20,686,241,493,369
5. Step 5: Solve for x
   x = 20,686,241,493,369/2,105,991
6. Step 6: Final answer
   x = 9,822,568.80