Finding the Third Proportional to 218,155 and 320,050

Step by Step Solution

1. Step 1: Write the proportion equation
   218,155 : 320,050 = 320,050 : x
2. Step 2: Convert to fraction form
   218,155/320,050 = 320,050/x
3. Step 3: Cross multiply
   218,155x = 320,050 × 320,050
4. Step 4: Simplify right side
   218,155x = 102,432,002,500
5. Step 5: Solve for x
   x = 102,432,002,500/218,155
6. Step 6: Final answer
   x = 469,537.73