Finding the Third Proportional to 1,289,904 and 2,685,672

Step by Step Solution

1. Step 1: Write the proportion equation
   1,289,904 : 2,685,672 = 2,685,672 : x
2. Step 2: Convert to fraction form
   1,289,904/2,685,672 = 2,685,672/x
3. Step 3: Cross multiply
   1,289,904x = 2,685,672 × 2,685,672
4. Step 4: Simplify right side
   1,289,904x = 7,212,834,091,584
5. Step 5: Solve for x
   x = 7,212,834,091,584/1,289,904
6. Step 6: Final answer
   x = 5,591,760.39