Finding the Third Proportional to 208,129.50 and 276,696

Step by Step Solution

1. Step 1: Write the proportion equation
   208,129.50 : 276,696 = 276,696 : x
2. Step 2: Convert to fraction form
   208,129.50/276,696 = 276,696/x
3. Step 3: Cross multiply
   208,129.50x = 276,696 × 276,696
4. Step 4: Simplify right side
   208,129.50x = 76,560,676,416
5. Step 5: Solve for x
   x = 76,560,676,416/208,129.50
6. Step 6: Final answer
   x = 367,851.15