Finding the Third Proportional to 1,863,188 and 3,991,972

Step by Step Solution

1. Step 1: Write the proportion equation
   1,863,188 : 3,991,972 = 3,991,972 : x
2. Step 2: Convert to fraction form
   1,863,188/3,991,972 = 3,991,972/x
3. Step 3: Cross multiply
   1,863,188x = 3,991,972 × 3,991,972
4. Step 4: Simplify right side
   1,863,188x = 15,935,840,448,784
5. Step 5: Solve for x
   x = 15,935,840,448,784/1,863,188
6. Step 6: Final answer
   x = 8,552,996.50