Finding the Third Proportional to 111,440.25 and 243,191.25

Step by Step Solution

1. Step 1: Write the proportion equation
   111,440.25 : 243,191.25 = 243,191.25 : x
2. Step 2: Convert to fraction form
   111,440.25/243,191.25 = 243,191.25/x
3. Step 3: Cross multiply
   111,440.25x = 243,191.25 × 243,191.25
4. Step 4: Simplify right side
   111,440.25x = 59,141,984,076.56
5. Step 5: Solve for x
   x = 59,141,984,076.56/111,440.25
6. Step 6: Final answer
   x = 530,705.77