Finding the Third Proportional to 30,638.25 and 42,028.88

Step by Step Solution

1. Step 1: Write the proportion equation
   30,638.25 : 42,028.88 = 42,028.88 : x
2. Step 2: Convert to fraction form
   30,638.25/42,028.88 = 42,028.88/x
3. Step 3: Cross multiply
   30,638.25x = 42,028.88 × 42,028.88
4. Step 4: Simplify right side
   30,638.25x = 1,766,426,333.77
5. Step 5: Solve for x
   x = 1,766,426,333.77/30,638.25
6. Step 6: Final answer
   x = 57,654.28