Finding the Third Proportional to 2,678,904 and 5,878,089

Step by Step Solution

1. Step 1: Write the proportion equation
   2,678,904 : 5,878,089 = 5,878,089 : x
2. Step 2: Convert to fraction form
   2,678,904/5,878,089 = 5,878,089/x
3. Step 3: Cross multiply
   2,678,904x = 5,878,089 × 5,878,089
4. Step 4: Simplify right side
   2,678,904x = 34,551,930,291,921
5. Step 5: Solve for x
   x = 34,551,930,291,921/2,678,904
6. Step 6: Final answer
   x = 12,897,785.92