Finding the Third Proportional to 562,185.50 and 863,585.50

Step by Step Solution

1. Step 1: Write the proportion equation
   562,185.50 : 863,585.50 = 863,585.50 : x
2. Step 2: Convert to fraction form
   562,185.50/863,585.50 = 863,585.50/x
3. Step 3: Cross multiply
   562,185.50x = 863,585.50 × 863,585.50
4. Step 4: Simplify right side
   562,185.50x = 745,779,915,810.25
5. Step 5: Solve for x
   x = 745,779,915,810.25/562,185.50
6. Step 6: Final answer
   x = 1,326,572.66