Finding the Third Proportional to 285,250 and 443,651

Step by Step Solution

1. Step 1: Write the proportion equation
   285,250 : 443,651 = 443,651 : x
2. Step 2: Convert to fraction form
   285,250/443,651 = 443,651/x
3. Step 3: Cross multiply
   285,250x = 443,651 × 443,651
4. Step 4: Simplify right side
   285,250x = 196,826,209,801
5. Step 5: Solve for x
   x = 196,826,209,801/285,250
6. Step 6: Final answer
   x = 690,013.01