Finding the Third Proportional to 1,365,615 and 2,121,772

Step by Step Solution

1. Step 1: Write the proportion equation
   1,365,615 : 2,121,772 = 2,121,772 : x
2. Step 2: Convert to fraction form
   1,365,615/2,121,772 = 2,121,772/x
3. Step 3: Cross multiply
   1,365,615x = 2,121,772 × 2,121,772
4. Step 4: Simplify right side
   1,365,615x = 4,501,916,419,984
5. Step 5: Solve for x
   x = 4,501,916,419,984/1,365,615
6. Step 6: Final answer
   x = 3,296,621.98