Finding the Third Proportional to 58,318.50 and 90,054

Step by Step Solution

1. Step 1: Write the proportion equation
   58,318.50 : 90,054 = 90,054 : x
2. Step 2: Convert to fraction form
   58,318.50/90,054 = 90,054/x
3. Step 3: Cross multiply
   58,318.50x = 90,054 × 90,054
4. Step 4: Simplify right side
   58,318.50x = 8,109,722,916
5. Step 5: Solve for x
   x = 8,109,722,916/58,318.50
6. Step 6: Final answer
   x = 139,059.18