Finding the Third Proportional to 1,078,391 and 1,691,530

Step by Step Solution

1. Step 1: Write the proportion equation
   1,078,391 : 1,691,530 = 1,691,530 : x
2. Step 2: Convert to fraction form
   1,078,391/1,691,530 = 1,691,530/x
3. Step 3: Cross multiply
   1,078,391x = 1,691,530 × 1,691,530
4. Step 4: Simplify right side
   1,078,391x = 2,861,273,740,900
5. Step 5: Solve for x
   x = 2,861,273,740,900/1,078,391
6. Step 6: Final answer
   x = 2,653,280.43