Finding the Third Proportional to 72,287 and 153,322

Step by Step Solution

1. Step 1: Write the proportion equation
   72,287 : 153,322 = 153,322 : x
2. Step 2: Convert to fraction form
   72,287/153,322 = 153,322/x
3. Step 3: Cross multiply
   72,287x = 153,322 × 153,322
4. Step 4: Simplify right side
   72,287x = 23,507,635,684
5. Step 5: Solve for x
   x = 23,507,635,684/72,287
6. Step 6: Final answer
   x = 325,198.66