Finding the Third Proportional to 32,139 and 69,216.75

Step by Step Solution

1. Step 1: Write the proportion equation
   32,139 : 69,216.75 = 69,216.75 : x
2. Step 2: Convert to fraction form
   32,139/69,216.75 = 69,216.75/x
3. Step 3: Cross multiply
   32,139x = 69,216.75 × 69,216.75
4. Step 4: Simplify right side
   32,139x = 4,790,958,480.56
5. Step 5: Solve for x
   x = 4,790,958,480.56/32,139
6. Step 6: Final answer
   x = 149,069.93