Finding the Third Proportional to 51,159 and 111,603

Step by Step Solution

1. Step 1: Write the proportion equation
   51,159 : 111,603 = 111,603 : x
2. Step 2: Convert to fraction form
   51,159/111,603 = 111,603/x
3. Step 3: Cross multiply
   51,159x = 111,603 × 111,603
4. Step 4: Simplify right side
   51,159x = 12,455,229,609
5. Step 5: Solve for x
   x = 12,455,229,609/51,159
6. Step 6: Final answer
   x = 243,461.16