Finding the Third Proportional to 9,742,886 and 13,621,131

Step by Step Solution

1. Step 1: Write the proportion equation
   9,742,886 : 13,621,131 = 13,621,131 : x
2. Step 2: Convert to fraction form
   9,742,886/13,621,131 = 13,621,131/x
3. Step 3: Cross multiply
   9,742,886x = 13,621,131 × 13,621,131
4. Step 4: Simplify right side
   9,742,886x = 185,535,209,719,161
5. Step 5: Solve for x
   x = 185,535,209,719,161/9,742,886
6. Step 6: Final answer
   x = 19,043,146.94