Finding the Third Proportional to 428,184 and 904,608

Step by Step Solution

1. Step 1: Write the proportion equation
   428,184 : 904,608 = 904,608 : x
2. Step 2: Convert to fraction form
   428,184/904,608 = 904,608/x
3. Step 3: Cross multiply
   428,184x = 904,608 × 904,608
4. Step 4: Simplify right side
   428,184x = 818,315,633,664
5. Step 5: Solve for x
   x = 818,315,633,664/428,184
6. Step 6: Final answer
   x = 1,911,130.81