Finding the Third Proportional to 276,606 and 417,451.50

Step by Step Solution

1. Step 1: Write the proportion equation
   276,606 : 417,451.50 = 417,451.50 : x
2. Step 2: Convert to fraction form
   276,606/417,451.50 = 417,451.50/x
3. Step 3: Cross multiply
   276,606x = 417,451.50 × 417,451.50
4. Step 4: Simplify right side
   276,606x = 174,265,754,852.25
5. Step 5: Solve for x
   x = 174,265,754,852.25/276,606
6. Step 6: Final answer
   x = 630,014.37