Finding the Third Proportional to 130.31 and 279.88

Step by Step Solution

1. Step 1: Write the proportion equation
   130.31 : 279.88 = 279.88 : x
2. Step 2: Convert to fraction form
   130.31/279.88 = 279.88/x
3. Step 3: Cross multiply
   130.31x = 279.88 × 279.88
4. Step 4: Simplify right side
   130.31x = 78,330.02
5. Step 5: Solve for x
   x = 78,330.02/130.31
6. Step 6: Final answer
   x = 601.09