Finding the Third Proportional to 131,787 and 288,666

Step by Step Solution

1. Step 1: Write the proportion equation
   131,787 : 288,666 = 288,666 : x
2. Step 2: Convert to fraction form
   131,787/288,666 = 288,666/x
3. Step 3: Cross multiply
   131,787x = 288,666 × 288,666
4. Step 4: Simplify right side
   131,787x = 83,328,059,556
5. Step 5: Solve for x
   x = 83,328,059,556/131,787
6. Step 6: Final answer
   x = 632,293.47