Finding the Third Proportional to 485,012 and 1,058,128

Step by Step Solution

1. Step 1: Write the proportion equation
   485,012 : 1,058,128 = 1,058,128 : x
2. Step 2: Convert to fraction form
   485,012/1,058,128 = 1,058,128/x
3. Step 3: Cross multiply
   485,012x = 1,058,128 × 1,058,128
4. Step 4: Simplify right side
   485,012x = 1,119,634,864,384
5. Step 5: Solve for x
   x = 1,119,634,864,384/485,012
6. Step 6: Final answer
   x = 2,308,468.38