Finding the Third Proportional to 131,746.50 and 288,481.50

Step by Step Solution

1. Step 1: Write the proportion equation
   131,746.50 : 288,481.50 = 288,481.50 : x
2. Step 2: Convert to fraction form
   131,746.50/288,481.50 = 288,481.50/x
3. Step 3: Cross multiply
   131,746.50x = 288,481.50 × 288,481.50
4. Step 4: Simplify right side
   131,746.50x = 83,221,575,842.25
5. Step 5: Solve for x
   x = 83,221,575,842.25/131,746.50
6. Step 6: Final answer
   x = 631,679.60