Finding the Third Proportional to 111,810.38 and 243,303.75

Step by Step Solution

1. Step 1: Write the proportion equation
   111,810.38 : 243,303.75 = 243,303.75 : x
2. Step 2: Convert to fraction form
   111,810.38/243,303.75 = 243,303.75/x
3. Step 3: Cross multiply
   111,810.38x = 243,303.75 × 243,303.75
4. Step 4: Simplify right side
   111,810.38x = 59,196,714,764.06
5. Step 5: Solve for x
   x = 59,196,714,764.06/111,810.38
6. Step 6: Final answer
   x = 529,438.48