Finding the Third Proportional to 350,574.75 and 765,990

Step by Step Solution

1. Step 1: Write the proportion equation
   350,574.75 : 765,990 = 765,990 : x
2. Step 2: Convert to fraction form
   350,574.75/765,990 = 765,990/x
3. Step 3: Cross multiply
   350,574.75x = 765,990 × 765,990
4. Step 4: Simplify right side
   350,574.75x = 586,740,680,100
5. Step 5: Solve for x
   x = 586,740,680,100/350,574.75
6. Step 6: Final answer
   x = 1,673,653.56