Finding the Third Proportional to 435,016.50 and 612,609

Step by Step Solution

1. Step 1: Write the proportion equation
   435,016.50 : 612,609 = 612,609 : x
2. Step 2: Convert to fraction form
   435,016.50/612,609 = 612,609/x
3. Step 3: Cross multiply
   435,016.50x = 612,609 × 612,609
4. Step 4: Simplify right side
   435,016.50x = 375,289,786,881
5. Step 5: Solve for x
   x = 375,289,786,881/435,016.50
6. Step 6: Final answer
   x = 862,702.42