Finding the Third Proportional to 349,894 and 557,020.50

Step by Step Solution

1. Step 1: Write the proportion equation
   349,894 : 557,020.50 = 557,020.50 : x
2. Step 2: Convert to fraction form
   349,894/557,020.50 = 557,020.50/x
3. Step 3: Cross multiply
   349,894x = 557,020.50 × 557,020.50
4. Step 4: Simplify right side
   349,894x = 310,271,837,420.25
5. Step 5: Solve for x
   x = 310,271,837,420.25/349,894
6. Step 6: Final answer
   x = 886,759.53