Finding the Third Proportional to 7,983,336 and 12,509,078

Step by Step Solution

1. Step 1: Write the proportion equation
   7,983,336 : 12,509,078 = 12,509,078 : x
2. Step 2: Convert to fraction form
   7,983,336/12,509,078 = 12,509,078/x
3. Step 3: Cross multiply
   7,983,336x = 12,509,078 × 12,509,078
4. Step 4: Simplify right side
   7,983,336x = 156,477,032,410,084
5. Step 5: Solve for x
   x = 156,477,032,410,084/7,983,336
6. Step 6: Final answer
   x = 19,600,456.80