Finding the Third Proportional to 1,262,820 and 2,245,146

Step by Step Solution

1. Step 1: Write the proportion equation
   1,262,820 : 2,245,146 = 2,245,146 : x
2. Step 2: Convert to fraction form
   1,262,820/2,245,146 = 2,245,146/x
3. Step 3: Cross multiply
   1,262,820x = 2,245,146 × 2,245,146
4. Step 4: Simplify right side
   1,262,820x = 5,040,680,561,316
5. Step 5: Solve for x
   x = 5,040,680,561,316/1,262,820
6. Step 6: Final answer
   x = 3,991,606.53