Finding the Third Proportional to 129,404.50 and 282,798

Step by Step Solution

1. Step 1: Write the proportion equation
   129,404.50 : 282,798 = 282,798 : x
2. Step 2: Convert to fraction form
   129,404.50/282,798 = 282,798/x
3. Step 3: Cross multiply
   129,404.50x = 282,798 × 282,798
4. Step 4: Simplify right side
   129,404.50x = 79,974,708,804
5. Step 5: Solve for x
   x = 79,974,708,804/129,404.50
6. Step 6: Final answer
   x = 618,021.08