Finding the Third Proportional to 378,772.50 and 810,744

Step by Step Solution

1. Step 1: Write the proportion equation
   378,772.50 : 810,744 = 810,744 : x
2. Step 2: Convert to fraction form
   378,772.50/810,744 = 810,744/x
3. Step 3: Cross multiply
   378,772.50x = 810,744 × 810,744
4. Step 4: Simplify right side
   378,772.50x = 657,305,833,536
5. Step 5: Solve for x
   x = 657,305,833,536/378,772.50
6. Step 6: Final answer
   x = 1,735,357.86