Finding the Third Proportional to 1,989,846 and 4,263,570

Step by Step Solution

1. Step 1: Write the proportion equation
   1,989,846 : 4,263,570 = 4,263,570 : x
2. Step 2: Convert to fraction form
   1,989,846/4,263,570 = 4,263,570/x
3. Step 3: Cross multiply
   1,989,846x = 4,263,570 × 4,263,570
4. Step 4: Simplify right side
   1,989,846x = 18,178,029,144,900
5. Step 5: Solve for x
   x = 18,178,029,144,900/1,989,846
6. Step 6: Final answer
   x = 9,135,394.97