Finding the Third Proportional to 118,219.50 and 259,416

Step by Step Solution

1. Step 1: Write the proportion equation
   118,219.50 : 259,416 = 259,416 : x
2. Step 2: Convert to fraction form
   118,219.50/259,416 = 259,416/x
3. Step 3: Cross multiply
   118,219.50x = 259,416 × 259,416
4. Step 4: Simplify right side
   118,219.50x = 67,296,661,056
5. Step 5: Solve for x
   x = 67,296,661,056/118,219.50
6. Step 6: Final answer
   x = 569,251.78