Finding the Third Proportional to 131,128.88 and 287,955

Step by Step Solution

1. Step 1: Write the proportion equation
   131,128.88 : 287,955 = 287,955 : x
2. Step 2: Convert to fraction form
   131,128.88/287,955 = 287,955/x
3. Step 3: Cross multiply
   131,128.88x = 287,955 × 287,955
4. Step 4: Simplify right side
   131,128.88x = 82,918,082,025
5. Step 5: Solve for x
   x = 82,918,082,025/131,128.88
6. Step 6: Final answer
   x = 632,340.38