Finding the Third Proportional to 7,139,718 and 10,876,920

Step by Step Solution

1. Step 1: Write the proportion equation
   7,139,718 : 10,876,920 = 10,876,920 : x
2. Step 2: Convert to fraction form
   7,139,718/10,876,920 = 10,876,920/x
3. Step 3: Cross multiply
   7,139,718x = 10,876,920 × 10,876,920
4. Step 4: Simplify right side
   7,139,718x = 118,307,388,686,400
5. Step 5: Solve for x
   x = 118,307,388,686,400/7,139,718
6. Step 6: Final answer
   x = 16,570,316.74