Finding the Third Proportional to 61,213.50 and 89,723.25

Step by Step Solution

1. Step 1: Write the proportion equation
   61,213.50 : 89,723.25 = 89,723.25 : x
2. Step 2: Convert to fraction form
   61,213.50/89,723.25 = 89,723.25/x
3. Step 3: Cross multiply
   61,213.50x = 89,723.25 × 89,723.25
4. Step 4: Simplify right side
   61,213.50x = 8,050,261,590.56
5. Step 5: Solve for x
   x = 8,050,261,590.56/61,213.50
6. Step 6: Final answer
   x = 131,511.21