Finding the Third Proportional to 746,760 and 1,638,672

Step by Step Solution

1. Step 1: Write the proportion equation
   746,760 : 1,638,672 = 1,638,672 : x
2. Step 2: Convert to fraction form
   746,760/1,638,672 = 1,638,672/x
3. Step 3: Cross multiply
   746,760x = 1,638,672 × 1,638,672
4. Step 4: Simplify right side
   746,760x = 2,685,245,923,584
5. Step 5: Solve for x
   x = 2,685,245,923,584/746,760
6. Step 6: Final answer
   x = 3,595,862.02