Finding the Third Proportional to 1,681,200 and 3,648,180

Step by Step Solution

1. Step 1: Write the proportion equation
   1,681,200 : 3,648,180 = 3,648,180 : x
2. Step 2: Convert to fraction form
   1,681,200/3,648,180 = 3,648,180/x
3. Step 3: Cross multiply
   1,681,200x = 3,648,180 × 3,648,180
4. Step 4: Simplify right side
   1,681,200x = 13,309,217,312,400
5. Step 5: Solve for x
   x = 13,309,217,312,400/1,681,200
6. Step 6: Final answer
   x = 7,916,498.52