Finding the Third Proportional to 612,413 and 1,298,949

Step by Step Solution

1. Step 1: Write the proportion equation
   612,413 : 1,298,949 = 1,298,949 : x
2. Step 2: Convert to fraction form
   612,413/1,298,949 = 1,298,949/x
3. Step 3: Cross multiply
   612,413x = 1,298,949 × 1,298,949
4. Step 4: Simplify right side
   612,413x = 1,687,268,504,601
5. Step 5: Solve for x
   x = 1,687,268,504,601/612,413
6. Step 6: Final answer
   x = 2,755,115.43