Finding the Third Proportional to 3,941,700 and 8,490,644

Step by Step Solution

1. Step 1: Write the proportion equation
   3,941,700 : 8,490,644 = 8,490,644 : x
2. Step 2: Convert to fraction form
   3,941,700/8,490,644 = 8,490,644/x
3. Step 3: Cross multiply
   3,941,700x = 8,490,644 × 8,490,644
4. Step 4: Simplify right side
   3,941,700x = 72,091,035,534,736
5. Step 5: Solve for x
   x = 72,091,035,534,736/3,941,700
6. Step 6: Final answer
   x = 18,289,325.81