Finding the Third Proportional to 2,139,196 and 3,209,256

Step by Step Solution

1. Step 1: Write the proportion equation
   2,139,196 : 3,209,256 = 3,209,256 : x
2. Step 2: Convert to fraction form
   2,139,196/3,209,256 = 3,209,256/x
3. Step 3: Cross multiply
   2,139,196x = 3,209,256 × 3,209,256
4. Step 4: Simplify right side
   2,139,196x = 10,299,324,073,536
5. Step 5: Solve for x
   x = 10,299,324,073,536/2,139,196
6. Step 6: Final answer
   x = 4,814,577.10