Finding the Third Proportional to 39,199.50 and 59,721

Step by Step Solution

1. Step 1: Write the proportion equation
   39,199.50 : 59,721 = 59,721 : x
2. Step 2: Convert to fraction form
   39,199.50/59,721 = 59,721/x
3. Step 3: Cross multiply
   39,199.50x = 59,721 × 59,721
4. Step 4: Simplify right side
   39,199.50x = 3,566,597,841
5. Step 5: Solve for x
   x = 3,566,597,841/39,199.50
6. Step 6: Final answer
   x = 90,985.80