Finding the Third Proportional to 4,395,138 and 9,127,128

Step by Step Solution

1. Step 1: Write the proportion equation
   4,395,138 : 9,127,128 = 9,127,128 : x
2. Step 2: Convert to fraction form
   4,395,138/9,127,128 = 9,127,128/x
3. Step 3: Cross multiply
   4,395,138x = 9,127,128 × 9,127,128
4. Step 4: Simplify right side
   4,395,138x = 83,304,465,528,384
5. Step 5: Solve for x
   x = 83,304,465,528,384/4,395,138
6. Step 6: Final answer
   x = 18,953,777.00