Finding the Third Proportional to 1,209,240 and 2,636,208

Step by Step Solution

1. Step 1: Write the proportion equation
   1,209,240 : 2,636,208 = 2,636,208 : x
2. Step 2: Convert to fraction form
   1,209,240/2,636,208 = 2,636,208/x
3. Step 3: Cross multiply
   1,209,240x = 2,636,208 × 2,636,208
4. Step 4: Simplify right side
   1,209,240x = 6,949,592,619,264
5. Step 5: Solve for x
   x = 6,949,592,619,264/1,209,240
6. Step 6: Final answer
   x = 5,747,074.71