Finding the Third Proportional to 243,859.50 and 326,178

Step by Step Solution

1. Step 1: Write the proportion equation
   243,859.50 : 326,178 = 326,178 : x
2. Step 2: Convert to fraction form
   243,859.50/326,178 = 326,178/x
3. Step 3: Cross multiply
   243,859.50x = 326,178 × 326,178
4. Step 4: Simplify right side
   243,859.50x = 106,392,087,684
5. Step 5: Solve for x
   x = 106,392,087,684/243,859.50
6. Step 6: Final answer
   x = 436,284.37