Finding the Third Proportional to 87,210 and 188,362.50

Step by Step Solution

1. Step 1: Write the proportion equation
   87,210 : 188,362.50 = 188,362.50 : x
2. Step 2: Convert to fraction form
   87,210/188,362.50 = 188,362.50/x
3. Step 3: Cross multiply
   87,210x = 188,362.50 × 188,362.50
4. Step 4: Simplify right side
   87,210x = 35,480,431,406.25
5. Step 5: Solve for x
   x = 35,480,431,406.25/87,210
6. Step 6: Final answer
   x = 406,839.03