Finding the Third Proportional to 117,679.50 and 259,112.25

Step by Step Solution

1. Step 1: Write the proportion equation
   117,679.50 : 259,112.25 = 259,112.25 : x
2. Step 2: Convert to fraction form
   117,679.50/259,112.25 = 259,112.25/x
3. Step 3: Cross multiply
   117,679.50x = 259,112.25 × 259,112.25
4. Step 4: Simplify right side
   117,679.50x = 67,139,158,100.06
5. Step 5: Solve for x
   x = 67,139,158,100.06/117,679.50
6. Step 6: Final answer
   x = 570,525.52