Finding the Third Proportional to 12,698,260 and 19,161,870

Step by Step Solution

1. Step 1: Write the proportion equation
   12,698,260 : 19,161,870 = 19,161,870 : x
2. Step 2: Convert to fraction form
   12,698,260/19,161,870 = 19,161,870/x
3. Step 3: Cross multiply
   12,698,260x = 19,161,870 × 19,161,870
4. Step 4: Simplify right side
   12,698,260x = 367,177,261,896,900
5. Step 5: Solve for x
   x = 367,177,261,896,900/12,698,260
6. Step 6: Final answer
   x = 28,915,557.08