Finding the Third Proportional to 42,057.35 and 59,987.46

Step by Step Solution

1. Step 1: Write the proportion equation
   42,057.35 : 59,987.46 = 59,987.46 : x
2. Step 2: Convert to fraction form
   42,057.35/59,987.46 = 59,987.46/x
3. Step 3: Cross multiply
   42,057.35x = 59,987.46 × 59,987.46
4. Step 4: Simplify right side
   42,057.35x = 3,598,495,469.73
5. Step 5: Solve for x
   x = 3,598,495,469.73/42,057.35
6. Step 6: Final answer
   x = 85,561.63