Finding the Third Proportional to 579,099 and 885,870

Step by Step Solution

1. Step 1: Write the proportion equation
   579,099 : 885,870 = 885,870 : x
2. Step 2: Convert to fraction form
   579,099/885,870 = 885,870/x
3. Step 3: Cross multiply
   579,099x = 885,870 × 885,870
4. Step 4: Simplify right side
   579,099x = 784,765,656,900
5. Step 5: Solve for x
   x = 784,765,656,900/579,099
6. Step 6: Final answer
   x = 1,355,149.39