Finding the Third Proportional to 111,714.75 and 243,126

Step by Step Solution

1. Step 1: Write the proportion equation
   111,714.75 : 243,126 = 243,126 : x
2. Step 2: Convert to fraction form
   111,714.75/243,126 = 243,126/x
3. Step 3: Cross multiply
   111,714.75x = 243,126 × 243,126
4. Step 4: Simplify right side
   111,714.75x = 59,110,251,876
5. Step 5: Solve for x
   x = 59,110,251,876/111,714.75
6. Step 6: Final answer
   x = 529,117.70