Finding the Third Proportional to 58,840 and 90,028

Step by Step Solution

1. Step 1: Write the proportion equation
   58,840 : 90,028 = 90,028 : x
2. Step 2: Convert to fraction form
   58,840/90,028 = 90,028/x
3. Step 3: Cross multiply
   58,840x = 90,028 × 90,028
4. Step 4: Simplify right side
   58,840x = 8,105,040,784
5. Step 5: Solve for x
   x = 8,105,040,784/58,840
6. Step 6: Final answer
   x = 137,747.12