Finding the Third Proportional to 87,238.50 and 188,404.50

Step by Step Solution

1. Step 1: Write the proportion equation
   87,238.50 : 188,404.50 = 188,404.50 : x
2. Step 2: Convert to fraction form
   87,238.50/188,404.50 = 188,404.50/x
3. Step 3: Cross multiply
   87,238.50x = 188,404.50 × 188,404.50
4. Step 4: Simplify right side
   87,238.50x = 35,496,255,620.25
5. Step 5: Solve for x
   x = 35,496,255,620.25/87,238.50
6. Step 6: Final answer
   x = 406,887.51