Finding the Third Proportional to 8,461,476 and 12,890,610

Step by Step Solution

1. Step 1: Write the proportion equation
   8,461,476 : 12,890,610 = 12,890,610 : x
2. Step 2: Convert to fraction form
   8,461,476/12,890,610 = 12,890,610/x
3. Step 3: Cross multiply
   8,461,476x = 12,890,610 × 12,890,610
4. Step 4: Simplify right side
   8,461,476x = 166,167,826,172,100
5. Step 5: Solve for x
   x = 166,167,826,172,100/8,461,476
6. Step 6: Final answer
   x = 19,638,160.79