Finding the Third Proportional to 12,873,994.50 and 18,042,870

Step by Step Solution

1. Step 1: Write the proportion equation
   12,873,994.50 : 18,042,870 = 18,042,870 : x
2. Step 2: Convert to fraction form
   12,873,994.50/18,042,870 = 18,042,870/x
3. Step 3: Cross multiply
   12,873,994.50x = 18,042,870 × 18,042,870
4. Step 4: Simplify right side
   12,873,994.50x = 325,545,157,836,900
5. Step 5: Solve for x
   x = 325,545,157,836,900/12,873,994.50
6. Step 6: Final answer
   x = 25,287,035.65