Finding the Third Proportional to 6,388,288 and 13,932,686

Step by Step Solution

1. Step 1: Write the proportion equation
   6,388,288 : 13,932,686 = 13,932,686 : x
2. Step 2: Convert to fraction form
   6,388,288/13,932,686 = 13,932,686/x
3. Step 3: Cross multiply
   6,388,288x = 13,932,686 × 13,932,686
4. Step 4: Simplify right side
   6,388,288x = 194,119,739,174,596
5. Step 5: Solve for x
   x = 194,119,739,174,596/6,388,288
6. Step 6: Final answer
   x = 30,386,817.12