Finding the Third Proportional to 1,207,078 and 2,638,364

Step by Step Solution

1. Step 1: Write the proportion equation
   1,207,078 : 2,638,364 = 2,638,364 : x
2. Step 2: Convert to fraction form
   1,207,078/2,638,364 = 2,638,364/x
3. Step 3: Cross multiply
   1,207,078x = 2,638,364 × 2,638,364
4. Step 4: Simplify right side
   1,207,078x = 6,960,964,596,496
5. Step 5: Solve for x
   x = 6,960,964,596,496/1,207,078
6. Step 6: Final answer
   x = 5,766,789.38