Finding the Third Proportional to 118,389 and 259,698

Step by Step Solution

1. Step 1: Write the proportion equation
   118,389 : 259,698 = 259,698 : x
2. Step 2: Convert to fraction form
   118,389/259,698 = 259,698/x
3. Step 3: Cross multiply
   118,389x = 259,698 × 259,698
4. Step 4: Simplify right side
   118,389x = 67,443,051,204
5. Step 5: Solve for x
   x = 67,443,051,204/118,389
6. Step 6: Final answer
   x = 569,673.29