Finding the Third Proportional to 1,663,886 and 3,406,624

Step by Step Solution

1. Step 1: Write the proportion equation
   1,663,886 : 3,406,624 = 3,406,624 : x
2. Step 2: Convert to fraction form
   1,663,886/3,406,624 = 3,406,624/x
3. Step 3: Cross multiply
   1,663,886x = 3,406,624 × 3,406,624
4. Step 4: Simplify right side
   1,663,886x = 11,605,087,077,376
5. Step 5: Solve for x
   x = 11,605,087,077,376/1,663,886
6. Step 6: Final answer
   x = 6,974,688.82