Finding the Third Proportional to 117,336 and 240,139

Step by Step Solution

1. Step 1: Write the proportion equation
   117,336 : 240,139 = 240,139 : x
2. Step 2: Convert to fraction form
   117,336/240,139 = 240,139/x
3. Step 3: Cross multiply
   117,336x = 240,139 × 240,139
4. Step 4: Simplify right side
   117,336x = 57,666,739,321
5. Step 5: Solve for x
   x = 57,666,739,321/117,336
6. Step 6: Final answer
   x = 491,466.72