Finding the Third Proportional to 19,686,481.50 and 30,819,999

Step by Step Solution

1. Step 1: Write the proportion equation
   19,686,481.50 : 30,819,999 = 30,819,999 : x
2. Step 2: Convert to fraction form
   19,686,481.50/30,819,999 = 30,819,999/x
3. Step 3: Cross multiply
   19,686,481.50x = 30,819,999 × 30,819,999
4. Step 4: Simplify right side
   19,686,481.50x = 949,872,338,360,001
5. Step 5: Solve for x
   x = 949,872,338,360,001/19,686,481.50
6. Step 6: Final answer
   x = 48,249,979.99