Finding the Third Proportional to 58,291 and 90,012

Step by Step Solution

1. Step 1: Write the proportion equation
   58,291 : 90,012 = 90,012 : x
2. Step 2: Convert to fraction form
   58,291/90,012 = 90,012/x
3. Step 3: Cross multiply
   58,291x = 90,012 × 90,012
4. Step 4: Simplify right side
   58,291x = 8,102,160,144
5. Step 5: Solve for x
   x = 8,102,160,144/58,291
6. Step 6: Final answer
   x = 138,995.04