Finding the Third Proportional to 111,814 and 243,312

Step by Step Solution

1. Step 1: Write the proportion equation
   111,814 : 243,312 = 243,312 : x
2. Step 2: Convert to fraction form
   111,814/243,312 = 243,312/x
3. Step 3: Cross multiply
   111,814x = 243,312 × 243,312
4. Step 4: Simplify right side
   111,814x = 59,200,729,344
5. Step 5: Solve for x
   x = 59,200,729,344/111,814
6. Step 6: Final answer
   x = 529,457.22