Finding the Third Proportional to 663,639.50 and 1,024,796.50

Step by Step Solution

1. Step 1: Write the proportion equation
   663,639.50 : 1,024,796.50 = 1,024,796.50 : x
2. Step 2: Convert to fraction form
   663,639.50/1,024,796.50 = 1,024,796.50/x
3. Step 3: Cross multiply
   663,639.50x = 1,024,796.50 × 1,024,796.50
4. Step 4: Simplify right side
   663,639.50x = 1,050,207,866,412.25
5. Step 5: Solve for x
   x = 1,050,207,866,412.25/663,639.50
6. Step 6: Final answer
   x = 1,582,497.53