Finding the Third Proportional to 1,242,078 and 2,661,222

Step by Step Solution

1. Step 1: Write the proportion equation
   1,242,078 : 2,661,222 = 2,661,222 : x
2. Step 2: Convert to fraction form
   1,242,078/2,661,222 = 2,661,222/x
3. Step 3: Cross multiply
   1,242,078x = 2,661,222 × 2,661,222
4. Step 4: Simplify right side
   1,242,078x = 7,082,102,533,284
5. Step 5: Solve for x
   x = 7,082,102,533,284/1,242,078
6. Step 6: Final answer
   x = 5,701,817.87