Finding the Third Proportional to 855,634 and 1,821,380

Step by Step Solution

1. Step 1: Write the proportion equation
   855,634 : 1,821,380 = 1,821,380 : x
2. Step 2: Convert to fraction form
   855,634/1,821,380 = 1,821,380/x
3. Step 3: Cross multiply
   855,634x = 1,821,380 × 1,821,380
4. Step 4: Simplify right side
   855,634x = 3,317,425,104,400
5. Step 5: Solve for x
   x = 3,317,425,104,400/855,634
6. Step 6: Final answer
   x = 3,877,154.37