Finding the Third Proportional to 65,380.50 and 138,609

Step by Step Solution

1. Step 1: Write the proportion equation
   65,380.50 : 138,609 = 138,609 : x
2. Step 2: Convert to fraction form
   65,380.50/138,609 = 138,609/x
3. Step 3: Cross multiply
   65,380.50x = 138,609 × 138,609
4. Step 4: Simplify right side
   65,380.50x = 19,212,454,881
5. Step 5: Solve for x
   x = 19,212,454,881/65,380.50
6. Step 6: Final answer
   x = 293,856.04