Finding the Third Proportional to 2,118,322 and 4,539,876

Step by Step Solution

1. Step 1: Write the proportion equation
   2,118,322 : 4,539,876 = 4,539,876 : x
2. Step 2: Convert to fraction form
   2,118,322/4,539,876 = 4,539,876/x
3. Step 3: Cross multiply
   2,118,322x = 4,539,876 × 4,539,876
4. Step 4: Simplify right side
   2,118,322x = 20,610,474,095,376
5. Step 5: Solve for x
   x = 20,610,474,095,376/2,118,322
6. Step 6: Final answer
   x = 9,729,622.83