Finding the Third Proportional to 12,291,430 and 18,468,822

Step by Step Solution

1. Step 1: Write the proportion equation
   12,291,430 : 18,468,822 = 18,468,822 : x
2. Step 2: Convert to fraction form
   12,291,430/18,468,822 = 18,468,822/x
3. Step 3: Cross multiply
   12,291,430x = 18,468,822 × 18,468,822
4. Step 4: Simplify right side
   12,291,430x = 341,097,386,067,684
5. Step 5: Solve for x
   x = 341,097,386,067,684/12,291,430
6. Step 6: Final answer
   x = 27,750,830.14