Finding the Third Proportional to 72,322 and 111,972

Step by Step Solution

1. Step 1: Write the proportion equation
   72,322 : 111,972 = 111,972 : x
2. Step 2: Convert to fraction form
   72,322/111,972 = 111,972/x
3. Step 3: Cross multiply
   72,322x = 111,972 × 111,972
4. Step 4: Simplify right side
   72,322x = 12,537,728,784
5. Step 5: Solve for x
   x = 12,537,728,784/72,322
6. Step 6: Final answer
   x = 173,359.82