Finding the Third Proportional to 819,345 and 1,240,404

Step by Step Solution

1. Step 1: Write the proportion equation
   819,345 : 1,240,404 = 1,240,404 : x
2. Step 2: Convert to fraction form
   819,345/1,240,404 = 1,240,404/x
3. Step 3: Cross multiply
   819,345x = 1,240,404 × 1,240,404
4. Step 4: Simplify right side
   819,345x = 1,538,602,083,216
5. Step 5: Solve for x
   x = 1,538,602,083,216/819,345
6. Step 6: Final answer
   x = 1,877,843.99