Finding the Third Proportional to 131,318 and 288,166

Step by Step Solution

1. Step 1: Write the proportion equation
   131,318 : 288,166 = 288,166 : x
2. Step 2: Convert to fraction form
   131,318/288,166 = 288,166/x
3. Step 3: Cross multiply
   131,318x = 288,166 × 288,166
4. Step 4: Simplify right side
   131,318x = 83,039,643,556
5. Step 5: Solve for x
   x = 83,039,643,556/131,318
6. Step 6: Final answer
   x = 632,355.38