Finding the Third Proportional to 12,156,686 and 19,249,797

Step by Step Solution

1. Step 1: Write the proportion equation
   12,156,686 : 19,249,797 = 19,249,797 : x
2. Step 2: Convert to fraction form
   12,156,686/19,249,797 = 19,249,797/x
3. Step 3: Cross multiply
   12,156,686x = 19,249,797 × 19,249,797
4. Step 4: Simplify right side
   12,156,686x = 370,554,684,541,209
5. Step 5: Solve for x
   x = 370,554,684,541,209/12,156,686
6. Step 6: Final answer
   x = 30,481,554.31