Finding the Third Proportional to 30,286.50 and 63,880.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,286.50 : 63,880.50 = 63,880.50 : x
2. Step 2: Convert to fraction form
   30,286.50/63,880.50 = 63,880.50/x
3. Step 3: Cross multiply
   30,286.50x = 63,880.50 × 63,880.50
4. Step 4: Simplify right side
   30,286.50x = 4,080,718,280.25
5. Step 5: Solve for x
   x = 4,080,718,280.25/30,286.50
6. Step 6: Final answer
   x = 134,737.20