Finding the Third Proportional to 58,185 and 90,045

Step by Step Solution

1. Step 1: Write the proportion equation
   58,185 : 90,045 = 90,045 : x
2. Step 2: Convert to fraction form
   58,185/90,045 = 90,045/x
3. Step 3: Cross multiply
   58,185x = 90,045 × 90,045
4. Step 4: Simplify right side
   58,185x = 8,108,102,025
5. Step 5: Solve for x
   x = 8,108,102,025/58,185
6. Step 6: Final answer
   x = 139,350.38