Finding the Third Proportional to 68,586.75 and 98,779.50

Step by Step Solution

1. Step 1: Write the proportion equation
   68,586.75 : 98,779.50 = 98,779.50 : x
2. Step 2: Convert to fraction form
   68,586.75/98,779.50 = 98,779.50/x
3. Step 3: Cross multiply
   68,586.75x = 98,779.50 × 98,779.50
4. Step 4: Simplify right side
   68,586.75x = 9,757,389,620.25
5. Step 5: Solve for x
   x = 9,757,389,620.25/68,586.75
6. Step 6: Final answer
   x = 142,263.48