Finding the Third Proportional to 4,125,780 and 8,961,516

Step by Step Solution

1. Step 1: Write the proportion equation
   4,125,780 : 8,961,516 = 8,961,516 : x
2. Step 2: Convert to fraction form
   4,125,780/8,961,516 = 8,961,516/x
3. Step 3: Cross multiply
   4,125,780x = 8,961,516 × 8,961,516
4. Step 4: Simplify right side
   4,125,780x = 80,308,769,018,256
5. Step 5: Solve for x
   x = 80,308,769,018,256/4,125,780
6. Step 6: Final answer
   x = 19,465,111.81