Finding the Third Proportional to 39,908 and 59,090

Step by Step Solution

1. Step 1: Write the proportion equation
   39,908 : 59,090 = 59,090 : x
2. Step 2: Convert to fraction form
   39,908/59,090 = 59,090/x
3. Step 3: Cross multiply
   39,908x = 59,090 × 59,090
4. Step 4: Simplify right side
   39,908x = 3,491,628,100
5. Step 5: Solve for x
   x = 3,491,628,100/39,908
6. Step 6: Final answer
   x = 87,491.93