Finding the Third Proportional to 276,588 and 603,442.13

Step by Step Solution

1. Step 1: Write the proportion equation
   276,588 : 603,442.13 = 603,442.13 : x
2. Step 2: Convert to fraction form
   276,588/603,442.13 = 603,442.13/x
3. Step 3: Cross multiply
   276,588x = 603,442.13 × 603,442.13
4. Step 4: Simplify right side
   276,588x = 364,142,398,224.52
5. Step 5: Solve for x
   x = 364,142,398,224.52/276,588
6. Step 6: Final answer
   x = 1,316,551.69