Finding the Third Proportional to 78,525.50 and 171,719

Step by Step Solution

1. Step 1: Write the proportion equation
   78,525.50 : 171,719 = 171,719 : x
2. Step 2: Convert to fraction form
   78,525.50/171,719 = 171,719/x
3. Step 3: Cross multiply
   78,525.50x = 171,719 × 171,719
4. Step 4: Simplify right side
   78,525.50x = 29,487,414,961
5. Step 5: Solve for x
   x = 29,487,414,961/78,525.50
6. Step 6: Final answer
   x = 375,513.88