Finding the Third Proportional to 1,242,111 and 2,661,288

Step by Step Solution

1. Step 1: Write the proportion equation
   1,242,111 : 2,661,288 = 2,661,288 : x
2. Step 2: Convert to fraction form
   1,242,111/2,661,288 = 2,661,288/x
3. Step 3: Cross multiply
   1,242,111x = 2,661,288 × 2,661,288
4. Step 4: Simplify right side
   1,242,111x = 7,082,453,818,944
5. Step 5: Solve for x
   x = 7,082,453,818,944/1,242,111
6. Step 6: Final answer
   x = 5,701,949.20