Finding the Third Proportional to 4,163,378 and 8,876,416

Step by Step Solution

1. Step 1: Write the proportion equation
   4,163,378 : 8,876,416 = 8,876,416 : x
2. Step 2: Convert to fraction form
   4,163,378/8,876,416 = 8,876,416/x
3. Step 3: Cross multiply
   4,163,378x = 8,876,416 × 8,876,416
4. Step 4: Simplify right side
   4,163,378x = 78,790,761,005,056
5. Step 5: Solve for x
   x = 78,790,761,005,056/4,163,378
6. Step 6: Final answer
   x = 18,924,719.54