Finding the Third Proportional to 90,310.50 and 134,158.50

Step by Step Solution

1. Step 1: Write the proportion equation
   90,310.50 : 134,158.50 = 134,158.50 : x
2. Step 2: Convert to fraction form
   90,310.50/134,158.50 = 134,158.50/x
3. Step 3: Cross multiply
   90,310.50x = 134,158.50 × 134,158.50
4. Step 4: Simplify right side
   90,310.50x = 17,998,503,122.25
5. Step 5: Solve for x
   x = 17,998,503,122.25/90,310.50
6. Step 6: Final answer
   x = 199,295.80