Finding the Third Proportional to 91,831.50 and 188,599.50

Step by Step Solution

1. Step 1: Write the proportion equation
   91,831.50 : 188,599.50 = 188,599.50 : x
2. Step 2: Convert to fraction form
   91,831.50/188,599.50 = 188,599.50/x
3. Step 3: Cross multiply
   91,831.50x = 188,599.50 × 188,599.50
4. Step 4: Simplify right side
   91,831.50x = 35,569,771,400.25
5. Step 5: Solve for x
   x = 35,569,771,400.25/91,831.50
6. Step 6: Final answer
   x = 387,337.37