Finding the Third Proportional to 297,882 and 648,180

Step by Step Solution

1. Step 1: Write the proportion equation
   297,882 : 648,180 = 648,180 : x
2. Step 2: Convert to fraction form
   297,882/648,180 = 648,180/x
3. Step 3: Cross multiply
   297,882x = 648,180 × 648,180
4. Step 4: Simplify right side
   297,882x = 420,137,312,400
5. Step 5: Solve for x
   x = 420,137,312,400/297,882
6. Step 6: Final answer
   x = 1,410,415.24