Finding the Third Proportional to 1,680,557 and 3,687,658

Step by Step Solution

1. Step 1: Write the proportion equation
   1,680,557 : 3,687,658 = 3,687,658 : x
2. Step 2: Convert to fraction form
   1,680,557/3,687,658 = 3,687,658/x
3. Step 3: Cross multiply
   1,680,557x = 3,687,658 × 3,687,658
4. Step 4: Simplify right side
   1,680,557x = 13,598,821,524,964
5. Step 5: Solve for x
   x = 13,598,821,524,964/1,680,557
6. Step 6: Final answer
   x = 8,091,853.79