Finding the Third Proportional to 564,499 and 1,221,009

Step by Step Solution

1. Step 1: Write the proportion equation
   564,499 : 1,221,009 = 1,221,009 : x
2. Step 2: Convert to fraction form
   564,499/1,221,009 = 1,221,009/x
3. Step 3: Cross multiply
   564,499x = 1,221,009 × 1,221,009
4. Step 4: Simplify right side
   564,499x = 1,490,862,978,081
5. Step 5: Solve for x
   x = 1,490,862,978,081/564,499
6. Step 6: Final answer
   x = 2,641,037.41