Finding the Third Proportional to 4,043,910 and 8,656,440

Step by Step Solution

1. Step 1: Write the proportion equation
   4,043,910 : 8,656,440 = 8,656,440 : x
2. Step 2: Convert to fraction form
   4,043,910/8,656,440 = 8,656,440/x
3. Step 3: Cross multiply
   4,043,910x = 8,656,440 × 8,656,440
4. Step 4: Simplify right side
   4,043,910x = 74,933,953,473,600
5. Step 5: Solve for x
   x = 74,933,953,473,600/4,043,910
6. Step 6: Final answer
   x = 18,530,074.48