Finding the Third Proportional to 2,690,320 and 5,629,888

Step by Step Solution

1. Step 1: Write the proportion equation
   2,690,320 : 5,629,888 = 5,629,888 : x
2. Step 2: Convert to fraction form
   2,690,320/5,629,888 = 5,629,888/x
3. Step 3: Cross multiply
   2,690,320x = 5,629,888 × 5,629,888
4. Step 4: Simplify right side
   2,690,320x = 31,695,638,892,544
5. Step 5: Solve for x
   x = 31,695,638,892,544/2,690,320
6. Step 6: Final answer
   x = 11,781,363.89