Finding the Third Proportional to 64,610 and 140,260

Step by Step Solution

1. Step 1: Write the proportion equation
   64,610 : 140,260 = 140,260 : x
2. Step 2: Convert to fraction form
   64,610/140,260 = 140,260/x
3. Step 3: Cross multiply
   64,610x = 140,260 × 140,260
4. Step 4: Simplify right side
   64,610x = 19,672,867,600
5. Step 5: Solve for x
   x = 19,672,867,600/64,610
6. Step 6: Final answer
   x = 304,486.42