Finding the Third Proportional to 7,766,039 and 12,156,078

Step by Step Solution

1. Step 1: Write the proportion equation
   7,766,039 : 12,156,078 = 12,156,078 : x
2. Step 2: Convert to fraction form
   7,766,039/12,156,078 = 12,156,078/x
3. Step 3: Cross multiply
   7,766,039x = 12,156,078 × 12,156,078
4. Step 4: Simplify right side
   7,766,039x = 147,770,232,342,084
5. Step 5: Solve for x
   x = 147,770,232,342,084/7,766,039
6. Step 6: Final answer
   x = 19,027,747.91