Finding the Third Proportional to 8,273,142 and 12,842,769

Step by Step Solution

1. Step 1: Write the proportion equation
   8,273,142 : 12,842,769 = 12,842,769 : x
2. Step 2: Convert to fraction form
   8,273,142/12,842,769 = 12,842,769/x
3. Step 3: Cross multiply
   8,273,142x = 12,842,769 × 12,842,769
4. Step 4: Simplify right side
   8,273,142x = 164,936,715,587,361
5. Step 5: Solve for x
   x = 164,936,715,587,361/8,273,142
6. Step 6: Final answer
   x = 19,936,405.73