Finding the Third Proportional to 131,450 and 288,340

Step by Step Solution

1. Step 1: Write the proportion equation
   131,450 : 288,340 = 288,340 : x
2. Step 2: Convert to fraction form
   131,450/288,340 = 288,340/x
3. Step 3: Cross multiply
   131,450x = 288,340 × 288,340
4. Step 4: Simplify right side
   131,450x = 83,139,955,600
5. Step 5: Solve for x
   x = 83,139,955,600/131,450
6. Step 6: Final answer
   x = 632,483.50