Finding the Third Proportional to 195,858 and 428,618.25

Step by Step Solution

1. Step 1: Write the proportion equation
   195,858 : 428,618.25 = 428,618.25 : x
2. Step 2: Convert to fraction form
   195,858/428,618.25 = 428,618.25/x
3. Step 3: Cross multiply
   195,858x = 428,618.25 × 428,618.25
4. Step 4: Simplify right side
   195,858x = 183,713,604,233.06
5. Step 5: Solve for x
   x = 183,713,604,233.06/195,858
6. Step 6: Final answer
   x = 937,993.87