Finding the Third Proportional to 78,964 and 171,432

Step by Step Solution

1. Step 1: Write the proportion equation
   78,964 : 171,432 = 171,432 : x
2. Step 2: Convert to fraction form
   78,964/171,432 = 171,432/x
3. Step 3: Cross multiply
   78,964x = 171,432 × 171,432
4. Step 4: Simplify right side
   78,964x = 29,388,930,624
5. Step 5: Solve for x
   x = 29,388,930,624/78,964
6. Step 6: Final answer
   x = 372,181.38