Finding the Third Proportional to 858,491 and 1,165,945.50

Step by Step Solution

1. Step 1: Write the proportion equation
   858,491 : 1,165,945.50 = 1,165,945.50 : x
2. Step 2: Convert to fraction form
   858,491/1,165,945.50 = 1,165,945.50/x
3. Step 3: Cross multiply
   858,491x = 1,165,945.50 × 1,165,945.50
4. Step 4: Simplify right side
   858,491x = 1,359,428,908,970.25
5. Step 5: Solve for x
   x = 1,359,428,908,970.25/858,491
6. Step 6: Final answer
   x = 1,583,509.80