Finding the Third Proportional to 49,961.42 and 64,819.78

Step by Step Solution

1. Step 1: Write the proportion equation
   49,961.42 : 64,819.78 = 64,819.78 : x
2. Step 2: Convert to fraction form
   49,961.42/64,819.78 = 64,819.78/x
3. Step 3: Cross multiply
   49,961.42x = 64,819.78 × 64,819.78
4. Step 4: Simplify right side
   49,961.42x = 4,201,603,281.69
5. Step 5: Solve for x
   x = 4,201,603,281.69/49,961.42
6. Step 6: Final answer
   x = 84,096.96