Finding the Third Proportional to 111,688.50 and 243,033

Step by Step Solution

1. Step 1: Write the proportion equation
   111,688.50 : 243,033 = 243,033 : x
2. Step 2: Convert to fraction form
   111,688.50/243,033 = 243,033/x
3. Step 3: Cross multiply
   111,688.50x = 243,033 × 243,033
4. Step 4: Simplify right side
   111,688.50x = 59,065,039,089
5. Step 5: Solve for x
   x = 59,065,039,089/111,688.50
6. Step 6: Final answer
   x = 528,837.25