Finding the Third Proportional to 66,903.50 and 91,739.75

Step by Step Solution

1. Step 1: Write the proportion equation
   66,903.50 : 91,739.75 = 91,739.75 : x
2. Step 2: Convert to fraction form
   66,903.50/91,739.75 = 91,739.75/x
3. Step 3: Cross multiply
   66,903.50x = 91,739.75 × 91,739.75
4. Step 4: Simplify right side
   66,903.50x = 8,416,181,730.06
5. Step 5: Solve for x
   x = 8,416,181,730.06/66,903.50
6. Step 6: Final answer
   x = 125,795.84