Finding the Third Proportional to 567,658.50 and 853,870.50

Step by Step Solution

1. Step 1: Write the proportion equation
   567,658.50 : 853,870.50 = 853,870.50 : x
2. Step 2: Convert to fraction form
   567,658.50/853,870.50 = 853,870.50/x
3. Step 3: Cross multiply
   567,658.50x = 853,870.50 × 853,870.50
4. Step 4: Simplify right side
   567,658.50x = 729,094,830,770.25
5. Step 5: Solve for x
   x = 729,094,830,770.25/567,658.50
6. Step 6: Final answer
   x = 1,284,389.88