Finding the Third Proportional to 838,388 and 1,818,557

Step by Step Solution

1. Step 1: Write the proportion equation
   838,388 : 1,818,557 = 1,818,557 : x
2. Step 2: Convert to fraction form
   838,388/1,818,557 = 1,818,557/x
3. Step 3: Cross multiply
   838,388x = 1,818,557 × 1,818,557
4. Step 4: Simplify right side
   838,388x = 3,307,149,562,249
5. Step 5: Solve for x
   x = 3,307,149,562,249/838,388
6. Step 6: Final answer
   x = 3,944,652.79