Finding the Third Proportional to 315,886 and 745,698

Step by Step Solution

1. Step 1: Write the proportion equation
   315,886 : 745,698 = 745,698 : x
2. Step 2: Convert to fraction form
   315,886/745,698 = 745,698/x
3. Step 3: Cross multiply
   315,886x = 745,698 × 745,698
4. Step 4: Simplify right side
   315,886x = 556,065,507,204
5. Step 5: Solve for x
   x = 556,065,507,204/315,886
6. Step 6: Final answer
   x = 1,760,336.03