Finding the Third Proportional to 338,405 and 752,455.75

Step by Step Solution

1. Step 1: Write the proportion equation
   338,405 : 752,455.75 = 752,455.75 : x
2. Step 2: Convert to fraction form
   338,405/752,455.75 = 752,455.75/x
3. Step 3: Cross multiply
   338,405x = 752,455.75 × 752,455.75
4. Step 4: Simplify right side
   338,405x = 566,189,655,708.06
5. Step 5: Solve for x
   x = 566,189,655,708.06/338,405
6. Step 6: Final answer
   x = 1,673,112.56