Finding the Third Proportional to 30,874.50 and 63,205.31

Step by Step Solution

1. Step 1: Write the proportion equation
   30,874.50 : 63,205.31 = 63,205.31 : x
2. Step 2: Convert to fraction form
   30,874.50/63,205.31 = 63,205.31/x
3. Step 3: Cross multiply
   30,874.50x = 63,205.31 × 63,205.31
4. Step 4: Simplify right side
   30,874.50x = 3,994,911,528.22
5. Step 5: Solve for x
   x = 3,994,911,528.22/30,874.50
6. Step 6: Final answer
   x = 129,391.94