Finding the Third Proportional to 1,390,404 and 1,862,262

Step by Step Solution

1. Step 1: Write the proportion equation
   1,390,404 : 1,862,262 = 1,862,262 : x
2. Step 2: Convert to fraction form
   1,390,404/1,862,262 = 1,862,262/x
3. Step 3: Cross multiply
   1,390,404x = 1,862,262 × 1,862,262
4. Step 4: Simplify right side
   1,390,404x = 3,468,019,756,644
5. Step 5: Solve for x
   x = 3,468,019,756,644/1,390,404
6. Step 6: Final answer
   x = 2,494,253.29