Finding the Third Proportional to 442,220 and 1,039,540

Step by Step Solution

1. Step 1: Write the proportion equation
   442,220 : 1,039,540 = 1,039,540 : x
2. Step 2: Convert to fraction form
   442,220/1,039,540 = 1,039,540/x
3. Step 3: Cross multiply
   442,220x = 1,039,540 × 1,039,540
4. Step 4: Simplify right side
   442,220x = 1,080,643,411,600
5. Step 5: Solve for x
   x = 1,080,643,411,600/442,220
6. Step 6: Final answer
   x = 2,443,678.29