Finding the Third Proportional to 3,940,863 and 8,529,438

Step by Step Solution

1. Step 1: Write the proportion equation
   3,940,863 : 8,529,438 = 8,529,438 : x
2. Step 2: Convert to fraction form
   3,940,863/8,529,438 = 8,529,438/x
3. Step 3: Cross multiply
   3,940,863x = 8,529,438 × 8,529,438
4. Step 4: Simplify right side
   3,940,863x = 72,751,312,595,844
5. Step 5: Solve for x
   x = 72,751,312,595,844/3,940,863
6. Step 6: Final answer
   x = 18,460,756.59