Finding the Third Proportional to 51,289 and 111,321

Step by Step Solution

1. Step 1: Write the proportion equation
   51,289 : 111,321 = 111,321 : x
2. Step 2: Convert to fraction form
   51,289/111,321 = 111,321/x
3. Step 3: Cross multiply
   51,289x = 111,321 × 111,321
4. Step 4: Simplify right side
   51,289x = 12,392,365,041
5. Step 5: Solve for x
   x = 12,392,365,041/51,289
6. Step 6: Final answer
   x = 241,618.38