Finding the Third Proportional to 12,856,328 and 19,450,380

Step by Step Solution

1. Step 1: Write the proportion equation
   12,856,328 : 19,450,380 = 19,450,380 : x
2. Step 2: Convert to fraction form
   12,856,328/19,450,380 = 19,450,380/x
3. Step 3: Cross multiply
   12,856,328x = 19,450,380 × 19,450,380
4. Step 4: Simplify right side
   12,856,328x = 378,317,282,144,400
5. Step 5: Solve for x
   x = 378,317,282,144,400/12,856,328
6. Step 6: Final answer
   x = 29,426,542.49