Finding the Third Proportional to 58,225.50 and 72,279

Step by Step Solution

1. Step 1: Write the proportion equation
   58,225.50 : 72,279 = 72,279 : x
2. Step 2: Convert to fraction form
   58,225.50/72,279 = 72,279/x
3. Step 3: Cross multiply
   58,225.50x = 72,279 × 72,279
4. Step 4: Simplify right side
   58,225.50x = 5,224,253,841
5. Step 5: Solve for x
   x = 5,224,253,841/58,225.50
6. Step 6: Final answer
   x = 89,724.50