Finding the Third Proportional to 1,212,858 and 2,021,244

Step by Step Solution

1. Step 1: Write the proportion equation
   1,212,858 : 2,021,244 = 2,021,244 : x
2. Step 2: Convert to fraction form
   1,212,858/2,021,244 = 2,021,244/x
3. Step 3: Cross multiply
   1,212,858x = 2,021,244 × 2,021,244
4. Step 4: Simplify right side
   1,212,858x = 4,085,427,307,536
5. Step 5: Solve for x
   x = 4,085,427,307,536/1,212,858
6. Step 6: Final answer
   x = 3,368,430.03