Finding the Third Proportional to 195,426 and 428,260

Step by Step Solution

1. Step 1: Write the proportion equation
   195,426 : 428,260 = 428,260 : x
2. Step 2: Convert to fraction form
   195,426/428,260 = 428,260/x
3. Step 3: Cross multiply
   195,426x = 428,260 × 428,260
4. Step 4: Simplify right side
   195,426x = 183,406,627,600
5. Step 5: Solve for x
   x = 183,406,627,600/195,426
6. Step 6: Final answer
   x = 938,496.55