Finding the Third Proportional to 1,312,040 and 2,142,443

Step by Step Solution

1. Step 1: Write the proportion equation
   1,312,040 : 2,142,443 = 2,142,443 : x
2. Step 2: Convert to fraction form
   1,312,040/2,142,443 = 2,142,443/x
3. Step 3: Cross multiply
   1,312,040x = 2,142,443 × 2,142,443
4. Step 4: Simplify right side
   1,312,040x = 4,590,062,008,249
5. Step 5: Solve for x
   x = 4,590,062,008,249/1,312,040
6. Step 6: Final answer
   x = 3,498,416.21