Finding the Third Proportional to 1,105,888 and 1,690,908

Step by Step Solution

1. Step 1: Write the proportion equation
   1,105,888 : 1,690,908 = 1,690,908 : x
2. Step 2: Convert to fraction form
   1,105,888/1,690,908 = 1,690,908/x
3. Step 3: Cross multiply
   1,105,888x = 1,690,908 × 1,690,908
4. Step 4: Simplify right side
   1,105,888x = 2,859,169,864,464
5. Step 5: Solve for x
   x = 2,859,169,864,464/1,105,888
6. Step 6: Final answer
   x = 2,585,406.36