Finding the Third Proportional to 678,699 and 1,462,293

Step by Step Solution

1. Step 1: Write the proportion equation
   678,699 : 1,462,293 = 1,462,293 : x
2. Step 2: Convert to fraction form
   678,699/1,462,293 = 1,462,293/x
3. Step 3: Cross multiply
   678,699x = 1,462,293 × 1,462,293
4. Step 4: Simplify right side
   678,699x = 2,138,300,817,849
5. Step 5: Solve for x
   x = 2,138,300,817,849/678,699
6. Step 6: Final answer
   x = 3,150,587.84