Finding the Third Proportional to 118,984.50 and 258,705

Step by Step Solution

1. Step 1: Write the proportion equation
   118,984.50 : 258,705 = 258,705 : x
2. Step 2: Convert to fraction form
   118,984.50/258,705 = 258,705/x
3. Step 3: Cross multiply
   118,984.50x = 258,705 × 258,705
4. Step 4: Simplify right side
   118,984.50x = 66,928,277,025
5. Step 5: Solve for x
   x = 66,928,277,025/118,984.50
6. Step 6: Final answer
   x = 562,495.76