Finding the Third Proportional to 87,145.50 and 188,944.50

Step by Step Solution

1. Step 1: Write the proportion equation
   87,145.50 : 188,944.50 = 188,944.50 : x
2. Step 2: Convert to fraction form
   87,145.50/188,944.50 = 188,944.50/x
3. Step 3: Cross multiply
   87,145.50x = 188,944.50 × 188,944.50
4. Step 4: Simplify right side
   87,145.50x = 35,700,024,080.25
5. Step 5: Solve for x
   x = 35,700,024,080.25/87,145.50
6. Step 6: Final answer
   x = 409,659.98