Finding the Third Proportional to 135,643.50 and 293,886

Step by Step Solution

1. Step 1: Write the proportion equation
   135,643.50 : 293,886 = 293,886 : x
2. Step 2: Convert to fraction form
   135,643.50/293,886 = 293,886/x
3. Step 3: Cross multiply
   135,643.50x = 293,886 × 293,886
4. Step 4: Simplify right side
   135,643.50x = 86,368,980,996
5. Step 5: Solve for x
   x = 86,368,980,996/135,643.50
6. Step 6: Final answer
   x = 636,735.13