Finding the Third Proportional to 42,290 and 59,403

Step by Step Solution

1. Step 1: Write the proportion equation
   42,290 : 59,403 = 59,403 : x
2. Step 2: Convert to fraction form
   42,290/59,403 = 59,403/x
3. Step 3: Cross multiply
   42,290x = 59,403 × 59,403
4. Step 4: Simplify right side
   42,290x = 3,528,716,409
5. Step 5: Solve for x
   x = 3,528,716,409/42,290
6. Step 6: Final answer
   x = 83,440.92