Finding the Third Proportional to 12,291,428 and 18,468,818

Step by Step Solution

1. Step 1: Write the proportion equation
   12,291,428 : 18,468,818 = 18,468,818 : x
2. Step 2: Convert to fraction form
   12,291,428/18,468,818 = 18,468,818/x
3. Step 3: Cross multiply
   12,291,428x = 18,468,818 × 18,468,818
4. Step 4: Simplify right side
   12,291,428x = 341,097,238,317,124
5. Step 5: Solve for x
   x = 341,097,238,317,124/12,291,428
6. Step 6: Final answer
   x = 27,750,822.63