Finding the Third Proportional to 19,854.31 and 30,870.47

Step by Step Solution

1. Step 1: Write the proportion equation
   19,854.31 : 30,870.47 = 30,870.47 : x
2. Step 2: Convert to fraction form
   19,854.31/30,870.47 = 30,870.47/x
3. Step 3: Cross multiply
   19,854.31x = 30,870.47 × 30,870.47
4. Step 4: Simplify right side
   19,854.31x = 952,985,840.84
5. Step 5: Solve for x
   x = 952,985,840.84/19,854.31
6. Step 6: Final answer
   x = 47,998.93