Finding the Third Proportional to 12,156,730 and 19,249,864

Step by Step Solution

1. Step 1: Write the proportion equation
   12,156,730 : 19,249,864 = 19,249,864 : x
2. Step 2: Convert to fraction form
   12,156,730/19,249,864 = 19,249,864/x
3. Step 3: Cross multiply
   12,156,730x = 19,249,864 × 19,249,864
4. Step 4: Simplify right side
   12,156,730x = 370,557,264,018,496
5. Step 5: Solve for x
   x = 370,557,264,018,496/12,156,730
6. Step 6: Final answer
   x = 30,481,656.17