Finding the Third Proportional to 163,039.50 and 343,764

Step by Step Solution

1. Step 1: Write the proportion equation
   163,039.50 : 343,764 = 343,764 : x
2. Step 2: Convert to fraction form
   163,039.50/343,764 = 343,764/x
3. Step 3: Cross multiply
   163,039.50x = 343,764 × 343,764
4. Step 4: Simplify right side
   163,039.50x = 118,173,687,696
5. Step 5: Solve for x
   x = 118,173,687,696/163,039.50
6. Step 6: Final answer
   x = 724,816.30