Finding the Third Proportional to 91,781.25 and 188,503.50

Step by Step Solution

1. Step 1: Write the proportion equation
   91,781.25 : 188,503.50 = 188,503.50 : x
2. Step 2: Convert to fraction form
   91,781.25/188,503.50 = 188,503.50/x
3. Step 3: Cross multiply
   91,781.25x = 188,503.50 × 188,503.50
4. Step 4: Simplify right side
   91,781.25x = 35,533,569,512.25
5. Step 5: Solve for x
   x = 35,533,569,512.25/91,781.25
6. Step 6: Final answer
   x = 387,155.00