Finding the Third Proportional to 349,789.50 and 540,144

Step by Step Solution

1. Step 1: Write the proportion equation
   349,789.50 : 540,144 = 540,144 : x
2. Step 2: Convert to fraction form
   349,789.50/540,144 = 540,144/x
3. Step 3: Cross multiply
   349,789.50x = 540,144 × 540,144
4. Step 4: Simplify right side
   349,789.50x = 291,755,540,736
5. Step 5: Solve for x
   x = 291,755,540,736/349,789.50
6. Step 6: Final answer
   x = 834,088.90