Finding the Third Proportional to 2,887,990 and 4,489,938

Step by Step Solution

1. Step 1: Write the proportion equation
   2,887,990 : 4,489,938 = 4,489,938 : x
2. Step 2: Convert to fraction form
   2,887,990/4,489,938 = 4,489,938/x
3. Step 3: Cross multiply
   2,887,990x = 4,489,938 × 4,489,938
4. Step 4: Simplify right side
   2,887,990x = 20,159,543,243,844
5. Step 5: Solve for x
   x = 20,159,543,243,844/2,887,990
6. Step 6: Final answer
   x = 6,980,475.43