Finding the Third Proportional to 321,111 and 759,399.75

Step by Step Solution

1. Step 1: Write the proportion equation
   321,111 : 759,399.75 = 759,399.75 : x
2. Step 2: Convert to fraction form
   321,111/759,399.75 = 759,399.75/x
3. Step 3: Cross multiply
   321,111x = 759,399.75 × 759,399.75
4. Step 4: Simplify right side
   321,111x = 576,687,980,300.06
5. Step 5: Solve for x
   x = 576,687,980,300.06/321,111
6. Step 6: Final answer
   x = 1,795,914.75