Finding the Third Proportional to 48,543 and 64,717.50

Step by Step Solution

1. Step 1: Write the proportion equation
   48,543 : 64,717.50 = 64,717.50 : x
2. Step 2: Convert to fraction form
   48,543/64,717.50 = 64,717.50/x
3. Step 3: Cross multiply
   48,543x = 64,717.50 × 64,717.50
4. Step 4: Simplify right side
   48,543x = 4,188,354,806.25
5. Step 5: Solve for x
   x = 4,188,354,806.25/48,543
6. Step 6: Final answer
   x = 86,281.33