Finding the Third Proportional to 1,836,657 and 4,288,905

Step by Step Solution

1. Step 1: Write the proportion equation
   1,836,657 : 4,288,905 = 4,288,905 : x
2. Step 2: Convert to fraction form
   1,836,657/4,288,905 = 4,288,905/x
3. Step 3: Cross multiply
   1,836,657x = 4,288,905 × 4,288,905
4. Step 4: Simplify right side
   1,836,657x = 18,394,706,099,025
5. Step 5: Solve for x
   x = 18,394,706,099,025/1,836,657
6. Step 6: Final answer
   x = 10,015,319.19