Finding the Third Proportional to 58,606.50 and 90,805

Step by Step Solution

1. Step 1: Write the proportion equation
   58,606.50 : 90,805 = 90,805 : x
2. Step 2: Convert to fraction form
   58,606.50/90,805 = 90,805/x
3. Step 3: Cross multiply
   58,606.50x = 90,805 × 90,805
4. Step 4: Simplify right side
   58,606.50x = 8,245,548,025
5. Step 5: Solve for x
   x = 8,245,548,025/58,606.50
6. Step 6: Final answer
   x = 140,693.40