Finding the Third Proportional to 612,146 and 1,322,653

Step by Step Solution

1. Step 1: Write the proportion equation
   612,146 : 1,322,653 = 1,322,653 : x
2. Step 2: Convert to fraction form
   612,146/1,322,653 = 1,322,653/x
3. Step 3: Cross multiply
   612,146x = 1,322,653 × 1,322,653
4. Step 4: Simplify right side
   612,146x = 1,749,410,958,409
5. Step 5: Solve for x
   x = 1,749,410,958,409/612,146
6. Step 6: Final answer
   x = 2,857,832.87