Finding the Third Proportional to 64,772 and 140,940

Step by Step Solution

1. Step 1: Write the proportion equation
   64,772 : 140,940 = 140,940 : x
2. Step 2: Convert to fraction form
   64,772/140,940 = 140,940/x
3. Step 3: Cross multiply
   64,772x = 140,940 × 140,940
4. Step 4: Simplify right side
   64,772x = 19,864,083,600
5. Step 5: Solve for x
   x = 19,864,083,600/64,772
6. Step 6: Final answer
   x = 306,677.01