Finding the Third Proportional to 1,316,166 and 1,990,449

Step by Step Solution

1. Step 1: Write the proportion equation
   1,316,166 : 1,990,449 = 1,990,449 : x
2. Step 2: Convert to fraction form
   1,316,166/1,990,449 = 1,990,449/x
3. Step 3: Cross multiply
   1,316,166x = 1,990,449 × 1,990,449
4. Step 4: Simplify right side
   1,316,166x = 3,961,887,221,601
5. Step 5: Solve for x
   x = 3,961,887,221,601/1,316,166
6. Step 6: Final answer
   x = 3,010,172.90