Finding the Third Proportional to 1,008,211 and 2,215,196

Step by Step Solution

1. Step 1: Write the proportion equation
   1,008,211 : 2,215,196 = 2,215,196 : x
2. Step 2: Convert to fraction form
   1,008,211/2,215,196 = 2,215,196/x
3. Step 3: Cross multiply
   1,008,211x = 2,215,196 × 2,215,196
4. Step 4: Simplify right side
   1,008,211x = 4,907,093,318,416
5. Step 5: Solve for x
   x = 4,907,093,318,416/1,008,211
6. Step 6: Final answer
   x = 4,867,129.32