Finding the Third Proportional to 230,072 and 492,128

Step by Step Solution

1. Step 1: Write the proportion equation
   230,072 : 492,128 = 492,128 : x
2. Step 2: Convert to fraction form
   230,072/492,128 = 492,128/x
3. Step 3: Cross multiply
   230,072x = 492,128 × 492,128
4. Step 4: Simplify right side
   230,072x = 242,189,968,384
5. Step 5: Solve for x
   x = 242,189,968,384/230,072
6. Step 6: Final answer
   x = 1,052,670.33