Finding the Third Proportional to 111,813.50 and 243,310

Step by Step Solution

1. Step 1: Write the proportion equation
   111,813.50 : 243,310 = 243,310 : x
2. Step 2: Convert to fraction form
   111,813.50/243,310 = 243,310/x
3. Step 3: Cross multiply
   111,813.50x = 243,310 × 243,310
4. Step 4: Simplify right side
   111,813.50x = 59,199,756,100
5. Step 5: Solve for x
   x = 59,199,756,100/111,813.50
6. Step 6: Final answer
   x = 529,450.88