Finding the Third Proportional to 491,521.50 and 664,074

Step by Step Solution

1. Step 1: Write the proportion equation
   491,521.50 : 664,074 = 664,074 : x
2. Step 2: Convert to fraction form
   491,521.50/664,074 = 664,074/x
3. Step 3: Cross multiply
   491,521.50x = 664,074 × 664,074
4. Step 4: Simplify right side
   491,521.50x = 440,994,277,476
5. Step 5: Solve for x
   x = 440,994,277,476/491,521.50
6. Step 6: Final answer
   x = 897,202.42