Finding the Third Proportional to 1,207,578 and 2,604,321

Step by Step Solution

1. Step 1: Write the proportion equation
   1,207,578 : 2,604,321 = 2,604,321 : x
2. Step 2: Convert to fraction form
   1,207,578/2,604,321 = 2,604,321/x
3. Step 3: Cross multiply
   1,207,578x = 2,604,321 × 2,604,321
4. Step 4: Simplify right side
   1,207,578x = 6,782,487,871,041
5. Step 5: Solve for x
   x = 6,782,487,871,041/1,207,578
6. Step 6: Final answer
   x = 5,616,604.37