Finding the Third Proportional to 2,518,263 and 5,438,583

Step by Step Solution

1. Step 1: Write the proportion equation
   2,518,263 : 5,438,583 = 5,438,583 : x
2. Step 2: Convert to fraction form
   2,518,263/5,438,583 = 5,438,583/x
3. Step 3: Cross multiply
   2,518,263x = 5,438,583 × 5,438,583
4. Step 4: Simplify right side
   2,518,263x = 29,578,185,047,889
5. Step 5: Solve for x
   x = 29,578,185,047,889/2,518,263
6. Step 6: Final answer
   x = 11,745,471.00