Finding the Third Proportional to 423,039 and 660,283.50

Step by Step Solution

1. Step 1: Write the proportion equation
   423,039 : 660,283.50 = 660,283.50 : x
2. Step 2: Convert to fraction form
   423,039/660,283.50 = 660,283.50/x
3. Step 3: Cross multiply
   423,039x = 660,283.50 × 660,283.50
4. Step 4: Simplify right side
   423,039x = 435,974,300,372.25
5. Step 5: Solve for x
   x = 435,974,300,372.25/423,039
6. Step 6: Final answer
   x = 1,030,577.09