Finding the Third Proportional to 99,711 and 215,074.50

Step by Step Solution

1. Step 1: Write the proportion equation
   99,711 : 215,074.50 = 215,074.50 : x
2. Step 2: Convert to fraction form
   99,711/215,074.50 = 215,074.50/x
3. Step 3: Cross multiply
   99,711x = 215,074.50 × 215,074.50
4. Step 4: Simplify right side
   99,711x = 46,257,040,550.25
5. Step 5: Solve for x
   x = 46,257,040,550.25/99,711
6. Step 6: Final answer
   x = 463,911.11