Finding the Third Proportional to 1,398,358 and 2,123,314

Step by Step Solution

1. Step 1: Write the proportion equation
   1,398,358 : 2,123,314 = 2,123,314 : x
2. Step 2: Convert to fraction form
   1,398,358/2,123,314 = 2,123,314/x
3. Step 3: Cross multiply
   1,398,358x = 2,123,314 × 2,123,314
4. Step 4: Simplify right side
   1,398,358x = 4,508,462,342,596
5. Step 5: Solve for x
   x = 4,508,462,342,596/1,398,358
6. Step 6: Final answer
   x = 3,224,111.67