Finding the Third Proportional to 127,986 and 279,299.25

Step by Step Solution

1. Step 1: Write the proportion equation
   127,986 : 279,299.25 = 279,299.25 : x
2. Step 2: Convert to fraction form
   127,986/279,299.25 = 279,299.25/x
3. Step 3: Cross multiply
   127,986x = 279,299.25 × 279,299.25
4. Step 4: Simplify right side
   127,986x = 78,008,071,050.56
5. Step 5: Solve for x
   x = 78,008,071,050.56/127,986
6. Step 6: Final answer
   x = 609,504.72