Finding the Third Proportional to 1,213,119 and 2,596,644

Step by Step Solution

1. Step 1: Write the proportion equation
   1,213,119 : 2,596,644 = 2,596,644 : x
2. Step 2: Convert to fraction form
   1,213,119/2,596,644 = 2,596,644/x
3. Step 3: Cross multiply
   1,213,119x = 2,596,644 × 2,596,644
4. Step 4: Simplify right side
   1,213,119x = 6,742,560,062,736
5. Step 5: Solve for x
   x = 6,742,560,062,736/1,213,119
6. Step 6: Final answer
   x = 5,558,036.81