Finding the Third Proportional to 51,272 and 111,520

Step by Step Solution

1. Step 1: Write the proportion equation
   51,272 : 111,520 = 111,520 : x
2. Step 2: Convert to fraction form
   51,272/111,520 = 111,520/x
3. Step 3: Cross multiply
   51,272x = 111,520 × 111,520
4. Step 4: Simplify right side
   51,272x = 12,436,710,400
5. Step 5: Solve for x
   x = 12,436,710,400/51,272
6. Step 6: Final answer
   x = 242,563.40