Finding the Third Proportional to 123,276 and 265,279

Step by Step Solution

1. Step 1: Write the proportion equation
   123,276 : 265,279 = 265,279 : x
2. Step 2: Convert to fraction form
   123,276/265,279 = 265,279/x
3. Step 3: Cross multiply
   123,276x = 265,279 × 265,279
4. Step 4: Simplify right side
   123,276x = 70,372,947,841
5. Step 5: Solve for x
   x = 70,372,947,841/123,276
6. Step 6: Final answer
   x = 570,856.84