Finding the Third Proportional to 1,212,912 and 2,021,322

Step by Step Solution

1. Step 1: Write the proportion equation
   1,212,912 : 2,021,322 = 2,021,322 : x
2. Step 2: Convert to fraction form
   1,212,912/2,021,322 = 2,021,322/x
3. Step 3: Cross multiply
   1,212,912x = 2,021,322 × 2,021,322
4. Step 4: Simplify right side
   1,212,912x = 4,085,742,627,684
5. Step 5: Solve for x
   x = 4,085,742,627,684/1,212,912
6. Step 6: Final answer
   x = 3,368,540.03