Finding the Third Proportional to 4,028,876 and 8,656,536

Step by Step Solution

1. Step 1: Write the proportion equation
   4,028,876 : 8,656,536 = 8,656,536 : x
2. Step 2: Convert to fraction form
   4,028,876/8,656,536 = 8,656,536/x
3. Step 3: Cross multiply
   4,028,876x = 8,656,536 × 8,656,536
4. Step 4: Simplify right side
   4,028,876x = 74,935,615,519,296
5. Step 5: Solve for x
   x = 74,935,615,519,296/4,028,876
6. Step 6: Final answer
   x = 18,599,633.13