Finding the Third Proportional to 78,641.25 and 171,106

Step by Step Solution

1. Step 1: Write the proportion equation
   78,641.25 : 171,106 = 171,106 : x
2. Step 2: Convert to fraction form
   78,641.25/171,106 = 171,106/x
3. Step 3: Cross multiply
   78,641.25x = 171,106 × 171,106
4. Step 4: Simplify right side
   78,641.25x = 29,277,263,236
5. Step 5: Solve for x
   x = 29,277,263,236/78,641.25
6. Step 6: Final answer
   x = 372,288.88