Finding the Third Proportional to 9,150,560 and 19,719,400

Step by Step Solution

1. Step 1: Write the proportion equation
   9,150,560 : 19,719,400 = 19,719,400 : x
2. Step 2: Convert to fraction form
   9,150,560/19,719,400 = 19,719,400/x
3. Step 3: Cross multiply
   9,150,560x = 19,719,400 × 19,719,400
4. Step 4: Simplify right side
   9,150,560x = 388,854,736,360,000
5. Step 5: Solve for x
   x = 388,854,736,360,000/9,150,560
6. Step 6: Final answer
   x = 42,495,184.60