Finding the Third Proportional to 617,690.81 and 1,443,078.28

Step by Step Solution

1. Step 1: Write the proportion equation
   617,690.81 : 1,443,078.28 = 1,443,078.28 : x
2. Step 2: Convert to fraction form
   617,690.81/1,443,078.28 = 1,443,078.28/x
3. Step 3: Cross multiply
   617,690.81x = 1,443,078.28 × 1,443,078.28
4. Step 4: Simplify right side
   617,690.81x = 2,082,474,925,815.45
5. Step 5: Solve for x
   x = 2,082,474,925,815.45/617,690.81
6. Step 6: Final answer
   x = 3,371,387.24