Finding the Third Proportional to 4,221,010 and 8,591,068

Step by Step Solution

1. Step 1: Write the proportion equation
   4,221,010 : 8,591,068 = 8,591,068 : x
2. Step 2: Convert to fraction form
   4,221,010/8,591,068 = 8,591,068/x
3. Step 3: Cross multiply
   4,221,010x = 8,591,068 × 8,591,068
4. Step 4: Simplify right side
   4,221,010x = 73,806,449,380,624
5. Step 5: Solve for x
   x = 73,806,449,380,624/4,221,010
6. Step 6: Final answer
   x = 17,485,495.03