Finding the Third Proportional to 64,860 and 141,459

Step by Step Solution

1. Step 1: Write the proportion equation
   64,860 : 141,459 = 141,459 : x
2. Step 2: Convert to fraction form
   64,860/141,459 = 141,459/x
3. Step 3: Cross multiply
   64,860x = 141,459 × 141,459
4. Step 4: Simplify right side
   64,860x = 20,010,648,681
5. Step 5: Solve for x
   x = 20,010,648,681/64,860
6. Step 6: Final answer
   x = 308,520.64