Finding the Third Proportional to 4,245,715 and 8,885,090

Step by Step Solution

1. Step 1: Write the proportion equation
   4,245,715 : 8,885,090 = 8,885,090 : x
2. Step 2: Convert to fraction form
   4,245,715/8,885,090 = 8,885,090/x
3. Step 3: Cross multiply
   4,245,715x = 8,885,090 × 8,885,090
4. Step 4: Simplify right side
   4,245,715x = 78,944,824,308,100
5. Step 5: Solve for x
   x = 78,944,824,308,100/4,245,715
6. Step 6: Final answer
   x = 18,593,999.91