Finding the Third Proportional to 9,742,884 and 13,621,128

Step by Step Solution

1. Step 1: Write the proportion equation
   9,742,884 : 13,621,128 = 13,621,128 : x
2. Step 2: Convert to fraction form
   9,742,884/13,621,128 = 13,621,128/x
3. Step 3: Cross multiply
   9,742,884x = 13,621,128 × 13,621,128
4. Step 4: Simplify right side
   9,742,884x = 185,535,127,992,384
5. Step 5: Solve for x
   x = 185,535,127,992,384/9,742,884
6. Step 6: Final answer
   x = 19,043,142.46