Finding the Third Proportional to 58,849 and 90,040

Step by Step Solution

1. Step 1: Write the proportion equation
   58,849 : 90,040 = 90,040 : x
2. Step 2: Convert to fraction form
   58,849/90,040 = 90,040/x
3. Step 3: Cross multiply
   58,849x = 90,040 × 90,040
4. Step 4: Simplify right side
   58,849x = 8,107,201,600
5. Step 5: Solve for x
   x = 8,107,201,600/58,849
6. Step 6: Final answer
   x = 137,762.78