Finding the Third Proportional to 1,188,231 and 1,788,018

Step by Step Solution

1. Step 1: Write the proportion equation
   1,188,231 : 1,788,018 = 1,788,018 : x
2. Step 2: Convert to fraction form
   1,188,231/1,788,018 = 1,788,018/x
3. Step 3: Cross multiply
   1,188,231x = 1,788,018 × 1,788,018
4. Step 4: Simplify right side
   1,188,231x = 3,197,008,368,324
5. Step 5: Solve for x
   x = 3,197,008,368,324/1,188,231
6. Step 6: Final answer
   x = 2,690,561.32