Finding the Third Proportional to 51,138 and 111,573

Step by Step Solution

1. Step 1: Write the proportion equation
   51,138 : 111,573 = 111,573 : x
2. Step 2: Convert to fraction form
   51,138/111,573 = 111,573/x
3. Step 3: Cross multiply
   51,138x = 111,573 × 111,573
4. Step 4: Simplify right side
   51,138x = 12,448,534,329
5. Step 5: Solve for x
   x = 12,448,534,329/51,138
6. Step 6: Final answer
   x = 243,430.21