Finding the Third Proportional to 9,150,600 and 19,719,468

Step by Step Solution

1. Step 1: Write the proportion equation
   9,150,600 : 19,719,468 = 19,719,468 : x
2. Step 2: Convert to fraction form
   9,150,600/19,719,468 = 19,719,468/x
3. Step 3: Cross multiply
   9,150,600x = 19,719,468 × 19,719,468
4. Step 4: Simplify right side
   9,150,600x = 388,857,418,203,024
5. Step 5: Solve for x
   x = 388,857,418,203,024/9,150,600
6. Step 6: Final answer
   x = 42,495,291.92