Finding the Third Proportional to 5,388,056 and 8,138,063

Step by Step Solution

1. Step 1: Write the proportion equation
   5,388,056 : 8,138,063 = 8,138,063 : x
2. Step 2: Convert to fraction form
   5,388,056/8,138,063 = 8,138,063/x
3. Step 3: Cross multiply
   5,388,056x = 8,138,063 × 8,138,063
4. Step 4: Simplify right side
   5,388,056x = 66,228,069,391,969
5. Step 5: Solve for x
   x = 66,228,069,391,969/5,388,056
6. Step 6: Final answer
   x = 12,291,644.59