Finding the Third Proportional to 1,663,888 and 3,406,628

Step by Step Solution

1. Step 1: Write the proportion equation
   1,663,888 : 3,406,628 = 3,406,628 : x
2. Step 2: Convert to fraction form
   1,663,888/3,406,628 = 3,406,628/x
3. Step 3: Cross multiply
   1,663,888x = 3,406,628 × 3,406,628
4. Step 4: Simplify right side
   1,663,888x = 11,605,114,330,384
5. Step 5: Solve for x
   x = 11,605,114,330,384/1,663,888
6. Step 6: Final answer
   x = 6,974,696.81