Finding the Third Proportional to 64,682 and 141,388.50

Step by Step Solution

1. Step 1: Write the proportion equation
   64,682 : 141,388.50 = 141,388.50 : x
2. Step 2: Convert to fraction form
   64,682/141,388.50 = 141,388.50/x
3. Step 3: Cross multiply
   64,682x = 141,388.50 × 141,388.50
4. Step 4: Simplify right side
   64,682x = 19,990,707,932.25
5. Step 5: Solve for x
   x = 19,990,707,932.25/64,682
6. Step 6: Final answer
   x = 309,061.38