Finding the Third Proportional to 1,399,604 and 2,099,040

Step by Step Solution

1. Step 1: Write the proportion equation
   1,399,604 : 2,099,040 = 2,099,040 : x
2. Step 2: Convert to fraction form
   1,399,604/2,099,040 = 2,099,040/x
3. Step 3: Cross multiply
   1,399,604x = 2,099,040 × 2,099,040
4. Step 4: Simplify right side
   1,399,604x = 4,405,968,921,600
5. Step 5: Solve for x
   x = 4,405,968,921,600/1,399,604
6. Step 6: Final answer
   x = 3,148,011.10