Finding the Third Proportional to 91,489.50 and 98,779.50

Step by Step Solution

1. Step 1: Write the proportion equation
   91,489.50 : 98,779.50 = 98,779.50 : x
2. Step 2: Convert to fraction form
   91,489.50/98,779.50 = 98,779.50/x
3. Step 3: Cross multiply
   91,489.50x = 98,779.50 × 98,779.50
4. Step 4: Simplify right side
   91,489.50x = 9,757,389,620.25
5. Step 5: Solve for x
   x = 9,757,389,620.25/91,489.50
6. Step 6: Final answer
   x = 106,650.38