Finding the Third Proportional to 485,064 and 989,856

Step by Step Solution

1. Step 1: Write the proportion equation
   485,064 : 989,856 = 989,856 : x
2. Step 2: Convert to fraction form
   485,064/989,856 = 989,856/x
3. Step 3: Cross multiply
   485,064x = 989,856 × 989,856
4. Step 4: Simplify right side
   485,064x = 979,814,900,736
5. Step 5: Solve for x
   x = 979,814,900,736/485,064
6. Step 6: Final answer
   x = 2,019,970.36