Finding the Third Proportional to 866,814 and 1,291,041

Step by Step Solution

1. Step 1: Write the proportion equation
   866,814 : 1,291,041 = 1,291,041 : x
2. Step 2: Convert to fraction form
   866,814/1,291,041 = 1,291,041/x
3. Step 3: Cross multiply
   866,814x = 1,291,041 × 1,291,041
4. Step 4: Simplify right side
   866,814x = 1,666,786,863,681
5. Step 5: Solve for x
   x = 1,666,786,863,681/866,814
6. Step 6: Final answer
   x = 1,922,888.72