Finding the Third Proportional to 122,331 and 188,086.50

Step by Step Solution

1. Step 1: Write the proportion equation
   122,331 : 188,086.50 = 188,086.50 : x
2. Step 2: Convert to fraction form
   122,331/188,086.50 = 188,086.50/x
3. Step 3: Cross multiply
   122,331x = 188,086.50 × 188,086.50
4. Step 4: Simplify right side
   122,331x = 35,376,531,482.25
5. Step 5: Solve for x
   x = 35,376,531,482.25/122,331
6. Step 6: Final answer
   x = 289,186.97