Finding the Third Proportional to 58,074.75 and 81,778.50

Step by Step Solution

1. Step 1: Write the proportion equation
   58,074.75 : 81,778.50 = 81,778.50 : x
2. Step 2: Convert to fraction form
   58,074.75/81,778.50 = 81,778.50/x
3. Step 3: Cross multiply
   58,074.75x = 81,778.50 × 81,778.50
4. Step 4: Simplify right side
   58,074.75x = 6,687,723,062.25
5. Step 5: Solve for x
   x = 6,687,723,062.25/58,074.75
6. Step 6: Final answer
   x = 115,157.16