Finding the Third Proportional to 1,354,869 and 1,857,866

Step by Step Solution

1. Step 1: Write the proportion equation
   1,354,869 : 1,857,866 = 1,857,866 : x
2. Step 2: Convert to fraction form
   1,354,869/1,857,866 = 1,857,866/x
3. Step 3: Cross multiply
   1,354,869x = 1,857,866 × 1,857,866
4. Step 4: Simplify right side
   1,354,869x = 3,451,666,073,956
5. Step 5: Solve for x
   x = 3,451,666,073,956/1,354,869
6. Step 6: Final answer
   x = 2,547,601.34