Finding the Third Proportional to 298,521 and 630,735.75

Step by Step Solution

1. Step 1: Write the proportion equation
   298,521 : 630,735.75 = 630,735.75 : x
2. Step 2: Convert to fraction form
   298,521/630,735.75 = 630,735.75/x
3. Step 3: Cross multiply
   298,521x = 630,735.75 × 630,735.75
4. Step 4: Simplify right side
   298,521x = 397,827,586,328.06
5. Step 5: Solve for x
   x = 397,827,586,328.06/298,521
6. Step 6: Final answer
   x = 1,332,661.98