Finding the Third Proportional to 1,993,872 and 4,386,306

Step by Step Solution

1. Step 1: Write the proportion equation
   1,993,872 : 4,386,306 = 4,386,306 : x
2. Step 2: Convert to fraction form
   1,993,872/4,386,306 = 4,386,306/x
3. Step 3: Cross multiply
   1,993,872x = 4,386,306 × 4,386,306
4. Step 4: Simplify right side
   1,993,872x = 19,239,680,325,636
5. Step 5: Solve for x
   x = 19,239,680,325,636/1,993,872
6. Step 6: Final answer
   x = 9,649,405.94