Finding the Third Proportional to 866,846.81 and 1,380,538.69

Step by Step Solution

1. Step 1: Write the proportion equation
   866,846.81 : 1,380,538.69 = 1,380,538.69 : x
2. Step 2: Convert to fraction form
   866,846.81/1,380,538.69 = 1,380,538.69/x
3. Step 3: Cross multiply
   866,846.81x = 1,380,538.69 × 1,380,538.69
4. Step 4: Simplify right side
   866,846.81x = 1,905,887,067,684.22
5. Step 5: Solve for x
   x = 1,905,887,067,684.22/866,846.81
6. Step 6: Final answer
   x = 2,198,643.45