Finding the Third Proportional to 78,367.50 and 166,719

Step by Step Solution

1. Step 1: Write the proportion equation
   78,367.50 : 166,719 = 166,719 : x
2. Step 2: Convert to fraction form
   78,367.50/166,719 = 166,719/x
3. Step 3: Cross multiply
   78,367.50x = 166,719 × 166,719
4. Step 4: Simplify right side
   78,367.50x = 27,795,224,961
5. Step 5: Solve for x
   x = 27,795,224,961/78,367.50
6. Step 6: Final answer
   x = 354,677.96