Finding the Third Proportional to 3,991,013 and 8,754,564

Step by Step Solution

1. Step 1: Write the proportion equation
   3,991,013 : 8,754,564 = 8,754,564 : x
2. Step 2: Convert to fraction form
   3,991,013/8,754,564 = 8,754,564/x
3. Step 3: Cross multiply
   3,991,013x = 8,754,564 × 8,754,564
4. Step 4: Simplify right side
   3,991,013x = 76,642,390,830,096
5. Step 5: Solve for x
   x = 76,642,390,830,096/3,991,013
6. Step 6: Final answer
   x = 19,203,743.72