Finding the Third Proportional to 1,399,840 and 2,892,990

Step by Step Solution

1. Step 1: Write the proportion equation
   1,399,840 : 2,892,990 = 2,892,990 : x
2. Step 2: Convert to fraction form
   1,399,840/2,892,990 = 2,892,990/x
3. Step 3: Cross multiply
   1,399,840x = 2,892,990 × 2,892,990
4. Step 4: Simplify right side
   1,399,840x = 8,369,391,140,100
5. Step 5: Solve for x
   x = 8,369,391,140,100/1,399,840
6. Step 6: Final answer
   x = 5,978,819.82