Finding the Third Proportional to 8,900,664 and 12,090,768

Step by Step Solution

1. Step 1: Write the proportion equation
   8,900,664 : 12,090,768 = 12,090,768 : x
2. Step 2: Convert to fraction form
   8,900,664/12,090,768 = 12,090,768/x
3. Step 3: Cross multiply
   8,900,664x = 12,090,768 × 12,090,768
4. Step 4: Simplify right side
   8,900,664x = 146,186,670,829,824
5. Step 5: Solve for x
   x = 146,186,670,829,824/8,900,664
6. Step 6: Final answer
   x = 16,424,243.27