Finding the Third Proportional to 42,690 and 65,959.50

Step by Step Solution

1. Step 1: Write the proportion equation
   42,690 : 65,959.50 = 65,959.50 : x
2. Step 2: Convert to fraction form
   42,690/65,959.50 = 65,959.50/x
3. Step 3: Cross multiply
   42,690x = 65,959.50 × 65,959.50
4. Step 4: Simplify right side
   42,690x = 4,350,655,640.25
5. Step 5: Solve for x
   x = 4,350,655,640.25/42,690
6. Step 6: Final answer
   x = 101,912.76