Finding the Third Proportional to 4,256,386 and 9,188,036

Step by Step Solution

1. Step 1: Write the proportion equation
   4,256,386 : 9,188,036 = 9,188,036 : x
2. Step 2: Convert to fraction form
   4,256,386/9,188,036 = 9,188,036/x
3. Step 3: Cross multiply
   4,256,386x = 9,188,036 × 9,188,036
4. Step 4: Simplify right side
   4,256,386x = 84,420,005,537,296
5. Step 5: Solve for x
   x = 84,420,005,537,296/4,256,386
6. Step 6: Final answer
   x = 19,833,728.79