Finding the Third Proportional to 12,912,884 and 19,300,404

Step by Step Solution

1. Step 1: Write the proportion equation
   12,912,884 : 19,300,404 = 19,300,404 : x
2. Step 2: Convert to fraction form
   12,912,884/19,300,404 = 19,300,404/x
3. Step 3: Cross multiply
   12,912,884x = 19,300,404 × 19,300,404
4. Step 4: Simplify right side
   12,912,884x = 372,505,594,563,216
5. Step 5: Solve for x
   x = 372,505,594,563,216/12,912,884
6. Step 6: Final answer
   x = 28,847,590.87