Finding the Third Proportional to 580,560 and 853,768.50

Step by Step Solution

1. Step 1: Write the proportion equation
   580,560 : 853,768.50 = 853,768.50 : x
2. Step 2: Convert to fraction form
   580,560/853,768.50 = 853,768.50/x
3. Step 3: Cross multiply
   580,560x = 853,768.50 × 853,768.50
4. Step 4: Simplify right side
   580,560x = 728,920,651,592.25
5. Step 5: Solve for x
   x = 728,920,651,592.25/580,560
6. Step 6: Final answer
   x = 1,255,547.49