Finding the Third Proportional to 298,046 and 648,484

Step by Step Solution

1. Step 1: Write the proportion equation
   298,046 : 648,484 = 648,484 : x
2. Step 2: Convert to fraction form
   298,046/648,484 = 648,484/x
3. Step 3: Cross multiply
   298,046x = 648,484 × 648,484
4. Step 4: Simplify right side
   298,046x = 420,531,498,256
5. Step 5: Solve for x
   x = 420,531,498,256/298,046
6. Step 6: Final answer
   x = 1,410,961.72