Finding the Third Proportional to 78,828.50 and 169,321

Step by Step Solution

1. Step 1: Write the proportion equation
   78,828.50 : 169,321 = 169,321 : x
2. Step 2: Convert to fraction form
   78,828.50/169,321 = 169,321/x
3. Step 3: Cross multiply
   78,828.50x = 169,321 × 169,321
4. Step 4: Simplify right side
   78,828.50x = 28,669,601,041
5. Step 5: Solve for x
   x = 28,669,601,041/78,828.50
6. Step 6: Final answer
   x = 363,695.88