Finding the Third Proportional to 10,917,146 and 17,123,678

Step by Step Solution

1. Step 1: Write the proportion equation
   10,917,146 : 17,123,678 = 17,123,678 : x
2. Step 2: Convert to fraction form
   10,917,146/17,123,678 = 17,123,678/x
3. Step 3: Cross multiply
   10,917,146x = 17,123,678 × 17,123,678
4. Step 4: Simplify right side
   10,917,146x = 293,220,348,247,684
5. Step 5: Solve for x
   x = 293,220,348,247,684/10,917,146
6. Step 6: Final answer
   x = 26,858,699.91