Finding the Third Proportional to 173,236 and 259,147.50

Step by Step Solution

1. Step 1: Write the proportion equation
   173,236 : 259,147.50 = 259,147.50 : x
2. Step 2: Convert to fraction form
   173,236/259,147.50 = 259,147.50/x
3. Step 3: Cross multiply
   173,236x = 259,147.50 × 259,147.50
4. Step 4: Simplify right side
   173,236x = 67,157,426,756.25
5. Step 5: Solve for x
   x = 67,157,426,756.25/173,236
6. Step 6: Final answer
   x = 387,664.38