Finding the Third Proportional to 7,142,866 and 10,778,706

Step by Step Solution

1. Step 1: Write the proportion equation
   7,142,866 : 10,778,706 = 10,778,706 : x
2. Step 2: Convert to fraction form
   7,142,866/10,778,706 = 10,778,706/x
3. Step 3: Cross multiply
   7,142,866x = 10,778,706 × 10,778,706
4. Step 4: Simplify right side
   7,142,866x = 116,180,503,034,436
5. Step 5: Solve for x
   x = 116,180,503,034,436/7,142,866
6. Step 6: Final answer
   x = 16,265,250.26