Finding the Third Proportional to 131,286 and 288,100.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,286 : 288,100.50 = 288,100.50 : x
2. Step 2: Convert to fraction form
   131,286/288,100.50 = 288,100.50/x
3. Step 3: Cross multiply
   131,286x = 288,100.50 × 288,100.50
4. Step 4: Simplify right side
   131,286x = 83,001,898,100.25
5. Step 5: Solve for x
   x = 83,001,898,100.25/131,286
6. Step 6: Final answer
   x = 632,222.00