Finding the Third Proportional to 12,567,780 and 19,216,890

Step by Step Solution

1. Step 1: Write the proportion equation
   12,567,780 : 19,216,890 = 19,216,890 : x
2. Step 2: Convert to fraction form
   12,567,780/19,216,890 = 19,216,890/x
3. Step 3: Cross multiply
   12,567,780x = 19,216,890 × 19,216,890
4. Step 4: Simplify right side
   12,567,780x = 369,288,861,272,100
5. Step 5: Solve for x
   x = 369,288,861,272,100/12,567,780
6. Step 6: Final answer
   x = 29,383,778.30