Finding the Third Proportional to 45,311.91 and 58,638.94

Step by Step Solution

1. Step 1: Write the proportion equation
   45,311.91 : 58,638.94 = 58,638.94 : x
2. Step 2: Convert to fraction form
   45,311.91/58,638.94 = 58,638.94/x
3. Step 3: Cross multiply
   45,311.91x = 58,638.94 × 58,638.94
4. Step 4: Simplify right side
   45,311.91x = 3,438,524,991.13
5. Step 5: Solve for x
   x = 3,438,524,991.13/45,311.91
6. Step 6: Final answer
   x = 75,885.68