Finding the Third Proportional to 3,606,420 and 5,581,326

Step by Step Solution

1. Step 1: Write the proportion equation
   3,606,420 : 5,581,326 = 5,581,326 : x
2. Step 2: Convert to fraction form
   3,606,420/5,581,326 = 5,581,326/x
3. Step 3: Cross multiply
   3,606,420x = 5,581,326 × 5,581,326
4. Step 4: Simplify right side
   3,606,420x = 31,151,199,918,276
5. Step 5: Solve for x
   x = 31,151,199,918,276/3,606,420
6. Step 6: Final answer
   x = 8,637,707.18