Finding the Third Proportional to 135,708 and 286,726.50

Step by Step Solution

1. Step 1: Write the proportion equation
   135,708 : 286,726.50 = 286,726.50 : x
2. Step 2: Convert to fraction form
   135,708/286,726.50 = 286,726.50/x
3. Step 3: Cross multiply
   135,708x = 286,726.50 × 286,726.50
4. Step 4: Simplify right side
   135,708x = 82,212,085,802.25
5. Step 5: Solve for x
   x = 82,212,085,802.25/135,708
6. Step 6: Final answer
   x = 605,801.32