Finding the Third Proportional to 139,162 and 208,375.50

Step by Step Solution

1. Step 1: Write the proportion equation
   139,162 : 208,375.50 = 208,375.50 : x
2. Step 2: Convert to fraction form
   139,162/208,375.50 = 208,375.50/x
3. Step 3: Cross multiply
   139,162x = 208,375.50 × 208,375.50
4. Step 4: Simplify right side
   139,162x = 43,420,349,000.25
5. Step 5: Solve for x
   x = 43,420,349,000.25/139,162
6. Step 6: Final answer
   x = 312,012.97