Finding the Third Proportional to 129,969 and 279,277.50

Step by Step Solution

1. Step 1: Write the proportion equation
   129,969 : 279,277.50 = 279,277.50 : x
2. Step 2: Convert to fraction form
   129,969/279,277.50 = 279,277.50/x
3. Step 3: Cross multiply
   129,969x = 279,277.50 × 279,277.50
4. Step 4: Simplify right side
   129,969x = 77,995,922,006.25
5. Step 5: Solve for x
   x = 77,995,922,006.25/129,969
6. Step 6: Final answer
   x = 600,111.73