Finding the Third Proportional to 7,780,228 and 12,500,706

Step by Step Solution

1. Step 1: Write the proportion equation
   7,780,228 : 12,500,706 = 12,500,706 : x
2. Step 2: Convert to fraction form
   7,780,228/12,500,706 = 12,500,706/x
3. Step 3: Cross multiply
   7,780,228x = 12,500,706 × 12,500,706
4. Step 4: Simplify right side
   7,780,228x = 156,267,650,498,436
5. Step 5: Solve for x
   x = 156,267,650,498,436/7,780,228
6. Step 6: Final answer
   x = 20,085,227.64