Finding the Third Proportional to 195,308 and 428,007

Step by Step Solution

1. Step 1: Write the proportion equation
   195,308 : 428,007 = 428,007 : x
2. Step 2: Convert to fraction form
   195,308/428,007 = 428,007/x
3. Step 3: Cross multiply
   195,308x = 428,007 × 428,007
4. Step 4: Simplify right side
   195,308x = 183,189,992,049
5. Step 5: Solve for x
   x = 183,189,992,049/195,308
6. Step 6: Final answer
   x = 937,954.37