Finding the Third Proportional to 610,640 and 1,329,760

Step by Step Solution

1. Step 1: Write the proportion equation
   610,640 : 1,329,760 = 1,329,760 : x
2. Step 2: Convert to fraction form
   610,640/1,329,760 = 1,329,760/x
3. Step 3: Cross multiply
   610,640x = 1,329,760 × 1,329,760
4. Step 4: Simplify right side
   610,640x = 1,768,261,657,600
5. Step 5: Solve for x
   x = 1,768,261,657,600/610,640
6. Step 6: Final answer
   x = 2,895,751.44