Finding the Third Proportional to 129,748.50 and 279,504

Step by Step Solution

1. Step 1: Write the proportion equation
   129,748.50 : 279,504 = 279,504 : x
2. Step 2: Convert to fraction form
   129,748.50/279,504 = 279,504/x
3. Step 3: Cross multiply
   129,748.50x = 279,504 × 279,504
4. Step 4: Simplify right side
   129,748.50x = 78,122,486,016
5. Step 5: Solve for x
   x = 78,122,486,016/129,748.50
6. Step 6: Final answer
   x = 602,107.05