Finding the Third Proportional to 129,379.50 and 282,897

Step by Step Solution

1. Step 1: Write the proportion equation
   129,379.50 : 282,897 = 282,897 : x
2. Step 2: Convert to fraction form
   129,379.50/282,897 = 282,897/x
3. Step 3: Cross multiply
   129,379.50x = 282,897 × 282,897
4. Step 4: Simplify right side
   129,379.50x = 80,030,712,609
5. Step 5: Solve for x
   x = 80,030,712,609/129,379.50
6. Step 6: Final answer
   x = 618,573.36