Finding the Third Proportional to 5,663,955 and 8,389,758

Step by Step Solution

1. Step 1: Write the proportion equation
   5,663,955 : 8,389,758 = 8,389,758 : x
2. Step 2: Convert to fraction form
   5,663,955/8,389,758 = 8,389,758/x
3. Step 3: Cross multiply
   5,663,955x = 8,389,758 × 8,389,758
4. Step 4: Simplify right side
   5,663,955x = 70,388,039,298,564
5. Step 5: Solve for x
   x = 70,388,039,298,564/5,663,955
6. Step 6: Final answer
   x = 12,427,365.56