Finding the Third Proportional to 554,049 and 859,585.50

Step by Step Solution

1. Step 1: Write the proportion equation
   554,049 : 859,585.50 = 859,585.50 : x
2. Step 2: Convert to fraction form
   554,049/859,585.50 = 859,585.50/x
3. Step 3: Cross multiply
   554,049x = 859,585.50 × 859,585.50
4. Step 4: Simplify right side
   554,049x = 738,887,231,810.25
5. Step 5: Solve for x
   x = 738,887,231,810.25/554,049
6. Step 6: Final answer
   x = 1,333,613.51