Finding the Third Proportional to 78,942 and 170,521.50

Step by Step Solution

1. Step 1: Write the proportion equation
   78,942 : 170,521.50 = 170,521.50 : x
2. Step 2: Convert to fraction form
   78,942/170,521.50 = 170,521.50/x
3. Step 3: Cross multiply
   78,942x = 170,521.50 × 170,521.50
4. Step 4: Simplify right side
   78,942x = 29,077,581,962.25
5. Step 5: Solve for x
   x = 29,077,581,962.25/78,942
6. Step 6: Final answer
   x = 368,341.09