Finding the Third Proportional to 297,786 and 648,060

Step by Step Solution

1. Step 1: Write the proportion equation
   297,786 : 648,060 = 648,060 : x
2. Step 2: Convert to fraction form
   297,786/648,060 = 648,060/x
3. Step 3: Cross multiply
   297,786x = 648,060 × 648,060
4. Step 4: Simplify right side
   297,786x = 419,981,763,600
5. Step 5: Solve for x
   x = 419,981,763,600/297,786
6. Step 6: Final answer
   x = 1,410,347.58