Finding the Third Proportional to 276,334.50 and 426,708

Step by Step Solution

1. Step 1: Write the proportion equation
   276,334.50 : 426,708 = 426,708 : x
2. Step 2: Convert to fraction form
   276,334.50/426,708 = 426,708/x
3. Step 3: Cross multiply
   276,334.50x = 426,708 × 426,708
4. Step 4: Simplify right side
   276,334.50x = 182,079,717,264
5. Step 5: Solve for x
   x = 182,079,717,264/276,334.50
6. Step 6: Final answer
   x = 658,910.55