Finding the Third Proportional to 69,216.50 and 106,109.50

Step by Step Solution

1. Step 1: Write the proportion equation
   69,216.50 : 106,109.50 = 106,109.50 : x
2. Step 2: Convert to fraction form
   69,216.50/106,109.50 = 106,109.50/x
3. Step 3: Cross multiply
   69,216.50x = 106,109.50 × 106,109.50
4. Step 4: Simplify right side
   69,216.50x = 11,259,225,990.25
5. Step 5: Solve for x
   x = 11,259,225,990.25/69,216.50
6. Step 6: Final answer
   x = 162,666.79