Finding the Third Proportional to 58,397.50 and 90,223

Step by Step Solution

1. Step 1: Write the proportion equation
   58,397.50 : 90,223 = 90,223 : x
2. Step 2: Convert to fraction form
   58,397.50/90,223 = 90,223/x
3. Step 3: Cross multiply
   58,397.50x = 90,223 × 90,223
4. Step 4: Simplify right side
   58,397.50x = 8,140,189,729
5. Step 5: Solve for x
   x = 8,140,189,729/58,397.50
6. Step 6: Final answer
   x = 139,392.78