Finding the Third Proportional to 49,617.56 and 64,892.39

Step by Step Solution

1. Step 1: Write the proportion equation
   49,617.56 : 64,892.39 = 64,892.39 : x
2. Step 2: Convert to fraction form
   49,617.56/64,892.39 = 64,892.39/x
3. Step 3: Cross multiply
   49,617.56x = 64,892.39 × 64,892.39
4. Step 4: Simplify right side
   49,617.56x = 4,211,022,361.03
5. Step 5: Solve for x
   x = 4,211,022,361.03/49,617.56
6. Step 6: Final answer
   x = 84,869.59