Finding the Third Proportional to 109,642 and 236,740

Step by Step Solution

1. Step 1: Write the proportion equation
   109,642 : 236,740 = 236,740 : x
2. Step 2: Convert to fraction form
   109,642/236,740 = 236,740/x
3. Step 3: Cross multiply
   109,642x = 236,740 × 236,740
4. Step 4: Simplify right side
   109,642x = 56,045,827,600
5. Step 5: Solve for x
   x = 56,045,827,600/109,642
6. Step 6: Final answer
   x = 511,171.15