Finding the Third Proportional to 1,989,766 and 4,263,392

Step by Step Solution

1. Step 1: Write the proportion equation
   1,989,766 : 4,263,392 = 4,263,392 : x
2. Step 2: Convert to fraction form
   1,989,766/4,263,392 = 4,263,392/x
3. Step 3: Cross multiply
   1,989,766x = 4,263,392 × 4,263,392
4. Step 4: Simplify right side
   1,989,766x = 18,176,511,345,664
5. Step 5: Solve for x
   x = 18,176,511,345,664/1,989,766
6. Step 6: Final answer
   x = 9,134,999.47