Finding the Third Proportional to 30,890 and 67,794.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,890 : 67,794.50 = 67,794.50 : x
2. Step 2: Convert to fraction form
   30,890/67,794.50 = 67,794.50/x
3. Step 3: Cross multiply
   30,890x = 67,794.50 × 67,794.50
4. Step 4: Simplify right side
   30,890x = 4,596,094,230.25
5. Step 5: Solve for x
   x = 4,596,094,230.25/30,890
6. Step 6: Final answer
   x = 148,789.07