Finding the Third Proportional to 678,704 and 1,423,504

Step by Step Solution

1. Step 1: Write the proportion equation
   678,704 : 1,423,504 = 1,423,504 : x
2. Step 2: Convert to fraction form
   678,704/1,423,504 = 1,423,504/x
3. Step 3: Cross multiply
   678,704x = 1,423,504 × 1,423,504
4. Step 4: Simplify right side
   678,704x = 2,026,363,638,016
5. Step 5: Solve for x
   x = 2,026,363,638,016/678,704
6. Step 6: Final answer
   x = 2,985,636.80