Finding the Third Proportional to 47,139.75 and 64,422

Step by Step Solution

1. Step 1: Write the proportion equation
   47,139.75 : 64,422 = 64,422 : x
2. Step 2: Convert to fraction form
   47,139.75/64,422 = 64,422/x
3. Step 3: Cross multiply
   47,139.75x = 64,422 × 64,422
4. Step 4: Simplify right side
   47,139.75x = 4,150,194,084
5. Step 5: Solve for x
   x = 4,150,194,084/47,139.75
6. Step 6: Final answer
   x = 88,040.22