Finding the Third Proportional to 295,858 and 648,030

Step by Step Solution

1. Step 1: Write the proportion equation
   295,858 : 648,030 = 648,030 : x
2. Step 2: Convert to fraction form
   295,858/648,030 = 648,030/x
3. Step 3: Cross multiply
   295,858x = 648,030 × 648,030
4. Step 4: Simplify right side
   295,858x = 419,942,880,900
5. Step 5: Solve for x
   x = 419,942,880,900/295,858
6. Step 6: Final answer
   x = 1,419,406.88