Finding the Third Proportional to 69,319.50 and 99,054.75

Step by Step Solution

1. Step 1: Write the proportion equation
   69,319.50 : 99,054.75 = 99,054.75 : x
2. Step 2: Convert to fraction form
   69,319.50/99,054.75 = 99,054.75/x
3. Step 3: Cross multiply
   69,319.50x = 99,054.75 × 99,054.75
4. Step 4: Simplify right side
   69,319.50x = 9,811,843,497.56
5. Step 5: Solve for x
   x = 9,811,843,497.56/69,319.50
6. Step 6: Final answer
   x = 141,545.21