Finding the Third Proportional to 276,723 and 417,625.50

Step by Step Solution

1. Step 1: Write the proportion equation
   276,723 : 417,625.50 = 417,625.50 : x
2. Step 2: Convert to fraction form
   276,723/417,625.50 = 417,625.50/x
3. Step 3: Cross multiply
   276,723x = 417,625.50 × 417,625.50
4. Step 4: Simplify right side
   276,723x = 174,411,058,250.25
5. Step 5: Solve for x
   x = 174,411,058,250.25/276,723
6. Step 6: Final answer
   x = 630,273.08