Finding the Third Proportional to 234,396 and 485,400

Step by Step Solution

1. Step 1: Write the proportion equation
   234,396 : 485,400 = 485,400 : x
2. Step 2: Convert to fraction form
   234,396/485,400 = 485,400/x
3. Step 3: Cross multiply
   234,396x = 485,400 × 485,400
4. Step 4: Simplify right side
   234,396x = 235,613,160,000
5. Step 5: Solve for x
   x = 235,613,160,000/234,396
6. Step 6: Final answer
   x = 1,005,192.75