Finding the Third Proportional to 201,131 and 320,150

Step by Step Solution

1. Step 1: Write the proportion equation
   201,131 : 320,150 = 320,150 : x
2. Step 2: Convert to fraction form
   201,131/320,150 = 320,150/x
3. Step 3: Cross multiply
   201,131x = 320,150 × 320,150
4. Step 4: Simplify right side
   201,131x = 102,496,022,500
5. Step 5: Solve for x
   x = 102,496,022,500/201,131
6. Step 6: Final answer
   x = 509,598.33