Finding the Third Proportional to 215,436 and 470,040

Step by Step Solution

1. Step 1: Write the proportion equation
   215,436 : 470,040 = 470,040 : x
2. Step 2: Convert to fraction form
   215,436/470,040 = 470,040/x
3. Step 3: Cross multiply
   215,436x = 470,040 × 470,040
4. Step 4: Simplify right side
   215,436x = 220,937,601,600
5. Step 5: Solve for x
   x = 220,937,601,600/215,436
6. Step 6: Final answer
   x = 1,025,537.06