Finding the Third Proportional to 134,611.50 and 208,407

Step by Step Solution

1. Step 1: Write the proportion equation
   134,611.50 : 208,407 = 208,407 : x
2. Step 2: Convert to fraction form
   134,611.50/208,407 = 208,407/x
3. Step 3: Cross multiply
   134,611.50x = 208,407 × 208,407
4. Step 4: Simplify right side
   134,611.50x = 43,433,477,649
5. Step 5: Solve for x
   x = 43,433,477,649/134,611.50
6. Step 6: Final answer
   x = 322,658.00