Finding the Third Proportional to 1,112,660 and 1,668,240

Step by Step Solution

1. Step 1: Write the proportion equation
   1,112,660 : 1,668,240 = 1,668,240 : x
2. Step 2: Convert to fraction form
   1,112,660/1,668,240 = 1,668,240/x
3. Step 3: Cross multiply
   1,112,660x = 1,668,240 × 1,668,240
4. Step 4: Simplify right side
   1,112,660x = 2,783,024,697,600
5. Step 5: Solve for x
   x = 2,783,024,697,600/1,112,660
6. Step 6: Final answer
   x = 2,501,235.51