Finding the Third Proportional to 30,108 and 42,799.50

Step by Step Solution

1. Step 1: Write the proportion equation
   30,108 : 42,799.50 = 42,799.50 : x
2. Step 2: Convert to fraction form
   30,108/42,799.50 = 42,799.50/x
3. Step 3: Cross multiply
   30,108x = 42,799.50 × 42,799.50
4. Step 4: Simplify right side
   30,108x = 1,831,797,200.25
5. Step 5: Solve for x
   x = 1,831,797,200.25/30,108
6. Step 6: Final answer
   x = 60,840.88