Finding the Third Proportional to 12,156,648 and 19,249,742

Step by Step Solution

1. Step 1: Write the proportion equation
   12,156,648 : 19,249,742 = 19,249,742 : x
2. Step 2: Convert to fraction form
   12,156,648/19,249,742 = 19,249,742/x
3. Step 3: Cross multiply
   12,156,648x = 19,249,742 × 19,249,742
4. Step 4: Simplify right side
   12,156,648x = 370,552,567,066,564
5. Step 5: Solve for x
   x = 370,552,567,066,564/12,156,648
6. Step 6: Final answer
   x = 30,481,475.41