Finding the Third Proportional to 72,456 and 111,384

Step by Step Solution

1. Step 1: Write the proportion equation
   72,456 : 111,384 = 111,384 : x
2. Step 2: Convert to fraction form
   72,456/111,384 = 111,384/x
3. Step 3: Cross multiply
   72,456x = 111,384 × 111,384
4. Step 4: Simplify right side
   72,456x = 12,406,395,456
5. Step 5: Solve for x
   x = 12,406,395,456/72,456
6. Step 6: Final answer
   x = 171,226.61