Finding the Third Proportional to 1,139,200 and 2,425,640

Step by Step Solution

1. Step 1: Write the proportion equation
   1,139,200 : 2,425,640 = 2,425,640 : x
2. Step 2: Convert to fraction form
   1,139,200/2,425,640 = 2,425,640/x
3. Step 3: Cross multiply
   1,139,200x = 2,425,640 × 2,425,640
4. Step 4: Simplify right side
   1,139,200x = 5,883,729,409,600
5. Step 5: Solve for x
   x = 5,883,729,409,600/1,139,200
6. Step 6: Final answer
   x = 5,164,790.56