Finding the Third Proportional to 243,036 and 379,909.50

Step by Step Solution

1. Step 1: Write the proportion equation
   243,036 : 379,909.50 = 379,909.50 : x
2. Step 2: Convert to fraction form
   243,036/379,909.50 = 379,909.50/x
3. Step 3: Cross multiply
   243,036x = 379,909.50 × 379,909.50
4. Step 4: Simplify right side
   243,036x = 144,331,228,190.25
5. Step 5: Solve for x
   x = 144,331,228,190.25/243,036
6. Step 6: Final answer
   x = 593,867.69