Finding the Third Proportional to 69,721 and 143,116

Step by Step Solution

1. Step 1: Write the proportion equation
   69,721 : 143,116 = 143,116 : x
2. Step 2: Convert to fraction form
   69,721/143,116 = 143,116/x
3. Step 3: Cross multiply
   69,721x = 143,116 × 143,116
4. Step 4: Simplify right side
   69,721x = 20,482,189,456
5. Step 5: Solve for x
   x = 20,482,189,456/69,721
6. Step 6: Final answer
   x = 293,773.60