Finding the Third Proportional to 78,967.50 and 172,698

Step by Step Solution

1. Step 1: Write the proportion equation
   78,967.50 : 172,698 = 172,698 : x
2. Step 2: Convert to fraction form
   78,967.50/172,698 = 172,698/x
3. Step 3: Cross multiply
   78,967.50x = 172,698 × 172,698
4. Step 4: Simplify right side
   78,967.50x = 29,824,599,204
5. Step 5: Solve for x
   x = 29,824,599,204/78,967.50
6. Step 6: Final answer
   x = 377,681.95