Finding the Third Proportional to 626,581.50 and 1,286,359.50

Step by Step Solution

1. Step 1: Write the proportion equation
   626,581.50 : 1,286,359.50 = 1,286,359.50 : x
2. Step 2: Convert to fraction form
   626,581.50/1,286,359.50 = 1,286,359.50/x
3. Step 3: Cross multiply
   626,581.50x = 1,286,359.50 × 1,286,359.50
4. Step 4: Simplify right side
   626,581.50x = 1,654,720,763,240.25
5. Step 5: Solve for x
   x = 1,654,720,763,240.25/626,581.50
6. Step 6: Final answer
   x = 2,640,870.76