Finding the Third Proportional to 50,078.25 and 70,439.63

Step by Step Solution

1. Step 1: Write the proportion equation
   50,078.25 : 70,439.63 = 70,439.63 : x
2. Step 2: Convert to fraction form
   50,078.25/70,439.63 = 70,439.63/x
3. Step 3: Cross multiply
   50,078.25x = 70,439.63 × 70,439.63
4. Step 4: Simplify right side
   50,078.25x = 4,961,740,770.14
5. Step 5: Solve for x
   x = 4,961,740,770.14/50,078.25
6. Step 6: Final answer
   x = 99,079.76