Finding the Third Proportional to 640,224 and 1,373,760

Step by Step Solution

1. Step 1: Write the proportion equation
   640,224 : 1,373,760 = 1,373,760 : x
2. Step 2: Convert to fraction form
   640,224/1,373,760 = 1,373,760/x
3. Step 3: Cross multiply
   640,224x = 1,373,760 × 1,373,760
4. Step 4: Simplify right side
   640,224x = 1,887,216,537,600
5. Step 5: Solve for x
   x = 1,887,216,537,600/640,224
6. Step 6: Final answer
   x = 2,947,744.13