Finding the Third Proportional to 678,657 and 1,049,870

Step by Step Solution

1. Step 1: Write the proportion equation
   678,657 : 1,049,870 = 1,049,870 : x
2. Step 2: Convert to fraction form
   678,657/1,049,870 = 1,049,870/x
3. Step 3: Cross multiply
   678,657x = 1,049,870 × 1,049,870
4. Step 4: Simplify right side
   678,657x = 1,102,227,016,900
5. Step 5: Solve for x
   x = 1,102,227,016,900/678,657
6. Step 6: Final answer
   x = 1,624,129.74