Finding the Third Proportional to 1,398,338 and 2,123,283

Step by Step Solution

1. Step 1: Write the proportion equation
   1,398,338 : 2,123,283 = 2,123,283 : x
2. Step 2: Convert to fraction form
   1,398,338/2,123,283 = 2,123,283/x
3. Step 3: Cross multiply
   1,398,338x = 2,123,283 × 2,123,283
4. Step 4: Simplify right side
   1,398,338x = 4,508,330,698,089
5. Step 5: Solve for x
   x = 4,508,330,698,089/1,398,338
6. Step 6: Final answer
   x = 3,224,063.64