Finding the Third Proportional to 589,900 and 902,040

Step by Step Solution

1. Step 1: Write the proportion equation
   589,900 : 902,040 = 902,040 : x
2. Step 2: Convert to fraction form
   589,900/902,040 = 902,040/x
3. Step 3: Cross multiply
   589,900x = 902,040 × 902,040
4. Step 4: Simplify right side
   589,900x = 813,676,161,600
5. Step 5: Solve for x
   x = 813,676,161,600/589,900
6. Step 6: Final answer
   x = 1,379,345.93