Finding the Third Proportional to 78,870.50 and 173,035

Step by Step Solution

1. Step 1: Write the proportion equation
   78,870.50 : 173,035 = 173,035 : x
2. Step 2: Convert to fraction form
   78,870.50/173,035 = 173,035/x
3. Step 3: Cross multiply
   78,870.50x = 173,035 × 173,035
4. Step 4: Simplify right side
   78,870.50x = 29,941,111,225
5. Step 5: Solve for x
   x = 29,941,111,225/78,870.50
6. Step 6: Final answer
   x = 379,623.70