Finding the Third Proportional to 64,658 and 141,340

Step by Step Solution

1. Step 1: Write the proportion equation
   64,658 : 141,340 = 141,340 : x
2. Step 2: Convert to fraction form
   64,658/141,340 = 141,340/x
3. Step 3: Cross multiply
   64,658x = 141,340 × 141,340
4. Step 4: Simplify right side
   64,658x = 19,976,995,600
5. Step 5: Solve for x
   x = 19,976,995,600/64,658
6. Step 6: Final answer
   x = 308,964.02