Finding the Third Proportional to 48,900.66 and 64,585.69

Step by Step Solution

1. Step 1: Write the proportion equation
   48,900.66 : 64,585.69 = 64,585.69 : x
2. Step 2: Convert to fraction form
   48,900.66/64,585.69 = 64,585.69/x
3. Step 3: Cross multiply
   48,900.66x = 64,585.69 × 64,585.69
4. Step 4: Simplify right side
   48,900.66x = 4,171,311,029.85
5. Step 5: Solve for x
   x = 4,171,311,029.85/48,900.66
6. Step 6: Final answer
   x = 85,301.74