Finding the Third Proportional to 1,291,656 and 1,991,986

Step by Step Solution

1. Step 1: Write the proportion equation
   1,291,656 : 1,991,986 = 1,991,986 : x
2. Step 2: Convert to fraction form
   1,291,656/1,991,986 = 1,991,986/x
3. Step 3: Cross multiply
   1,291,656x = 1,991,986 × 1,991,986
4. Step 4: Simplify right side
   1,291,656x = 3,968,008,224,196
5. Step 5: Solve for x
   x = 3,968,008,224,196/1,291,656
6. Step 6: Final answer
   x = 3,072,031.74