Finding the Third Proportional to 59,631 and 137,940

Step by Step Solution

1. Step 1: Write the proportion equation
   59,631 : 137,940 = 137,940 : x
2. Step 2: Convert to fraction form
   59,631/137,940 = 137,940/x
3. Step 3: Cross multiply
   59,631x = 137,940 × 137,940
4. Step 4: Simplify right side
   59,631x = 19,027,443,600
5. Step 5: Solve for x
   x = 19,027,443,600/59,631
6. Step 6: Final answer
   x = 319,086.44