Finding the Third Proportional to 258,066 and 555,680.25

Step by Step Solution

1. Step 1: Write the proportion equation
   258,066 : 555,680.25 = 555,680.25 : x
2. Step 2: Convert to fraction form
   258,066/555,680.25 = 555,680.25/x
3. Step 3: Cross multiply
   258,066x = 555,680.25 × 555,680.25
4. Step 4: Simplify right side
   258,066x = 308,780,540,240.06
5. Step 5: Solve for x
   x = 308,780,540,240.06/258,066
6. Step 6: Final answer
   x = 1,196,517.71