Finding the Third Proportional to 134,619.50 and 208,422

Step by Step Solution

1. Step 1: Write the proportion equation
   134,619.50 : 208,422 = 208,422 : x
2. Step 2: Convert to fraction form
   134,619.50/208,422 = 208,422/x
3. Step 3: Cross multiply
   134,619.50x = 208,422 × 208,422
4. Step 4: Simplify right side
   134,619.50x = 43,439,730,084
5. Step 5: Solve for x
   x = 43,439,730,084/134,619.50
6. Step 6: Final answer
   x = 322,685.27