Finding the Third Proportional to 123,149 and 265,978

Step by Step Solution

1. Step 1: Write the proportion equation
   123,149 : 265,978 = 265,978 : x
2. Step 2: Convert to fraction form
   123,149/265,978 = 265,978/x
3. Step 3: Cross multiply
   123,149x = 265,978 × 265,978
4. Step 4: Simplify right side
   123,149x = 70,744,296,484
5. Step 5: Solve for x
   x = 70,744,296,484/123,149
6. Step 6: Final answer
   x = 574,460.99