Finding the Third Proportional to 854,678 and 1,868,118

Step by Step Solution

1. Step 1: Write the proportion equation
   854,678 : 1,868,118 = 1,868,118 : x
2. Step 2: Convert to fraction form
   854,678/1,868,118 = 1,868,118/x
3. Step 3: Cross multiply
   854,678x = 1,868,118 × 1,868,118
4. Step 4: Simplify right side
   854,678x = 3,489,864,861,924
5. Step 5: Solve for x
   x = 3,489,864,861,924/854,678
6. Step 6: Final answer
   x = 4,083,251.07