Finding the Third Proportional to 111,685.50 and 243,452.25

Step by Step Solution

1. Step 1: Write the proportion equation
   111,685.50 : 243,452.25 = 243,452.25 : x
2. Step 2: Convert to fraction form
   111,685.50/243,452.25 = 243,452.25/x
3. Step 3: Cross multiply
   111,685.50x = 243,452.25 × 243,452.25
4. Step 4: Simplify right side
   111,685.50x = 59,268,998,030.06
5. Step 5: Solve for x
   x = 59,268,998,030.06/111,685.50
6. Step 6: Final answer
   x = 530,677.64