Finding the Third Proportional to 279,123 and 605,046

Step by Step Solution

1. Step 1: Write the proportion equation
   279,123 : 605,046 = 605,046 : x
2. Step 2: Convert to fraction form
   279,123/605,046 = 605,046/x
3. Step 3: Cross multiply
   279,123x = 605,046 × 605,046
4. Step 4: Simplify right side
   279,123x = 366,080,662,116
5. Step 5: Solve for x
   x = 366,080,662,116/279,123
6. Step 6: Final answer
   x = 1,311,538.86