Finding the Third Proportional to 1,681,215 and 3,648,210

Step by Step Solution

1. Step 1: Write the proportion equation
   1,681,215 : 3,648,210 = 3,648,210 : x
2. Step 2: Convert to fraction form
   1,681,215/3,648,210 = 3,648,210/x
3. Step 3: Cross multiply
   1,681,215x = 3,648,210 × 3,648,210
4. Step 4: Simplify right side
   1,681,215x = 13,309,436,204,100
5. Step 5: Solve for x
   x = 13,309,436,204,100/1,681,215
6. Step 6: Final answer
   x = 7,916,558.09