Finding the Third Proportional to 218,880 and 471,532.50

Step by Step Solution

1. Step 1: Write the proportion equation
   218,880 : 471,532.50 = 471,532.50 : x
2. Step 2: Convert to fraction form
   218,880/471,532.50 = 471,532.50/x
3. Step 3: Cross multiply
   218,880x = 471,532.50 × 471,532.50
4. Step 4: Simplify right side
   218,880x = 222,342,898,556.25
5. Step 5: Solve for x
   x = 222,342,898,556.25/218,880
6. Step 6: Final answer
   x = 1,015,820.99