Finding the Third Proportional to 1,105,886 and 1,690,905

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105,886 : 1,690,905 = 1,690,905 : x
2. Step 2: Convert to fraction form
   1,105,886/1,690,905 = 1,690,905/x
3. Step 3: Cross multiply
   1,105,886x = 1,690,905 × 1,690,905
4. Step 4: Simplify right side
   1,105,886x = 2,859,159,719,025
5. Step 5: Solve for x
   x = 2,859,159,719,025/1,105,886
6. Step 6: Final answer
   x = 2,585,401.86