Finding the Third Proportional to 657,544 and 990,096

Step by Step Solution

1. Step 1: Write the proportion equation
   657,544 : 990,096 = 990,096 : x
2. Step 2: Convert to fraction form
   657,544/990,096 = 990,096/x
3. Step 3: Cross multiply
   657,544x = 990,096 × 990,096
4. Step 4: Simplify right side
   657,544x = 980,290,089,216
5. Step 5: Solve for x
   x = 980,290,089,216/657,544
6. Step 6: Final answer
   x = 1,490,835.73