Finding the Third Proportional to 58,504.50 and 90,546.50

Step by Step Solution

1. Step 1: Write the proportion equation
   58,504.50 : 90,546.50 = 90,546.50 : x
2. Step 2: Convert to fraction form
   58,504.50/90,546.50 = 90,546.50/x
3. Step 3: Cross multiply
   58,504.50x = 90,546.50 × 90,546.50
4. Step 4: Simplify right side
   58,504.50x = 8,198,668,662.25
5. Step 5: Solve for x
   x = 8,198,668,662.25/58,504.50
6. Step 6: Final answer
   x = 140,137.40