Finding the Third Proportional to 218,919 and 475,012.50

Step by Step Solution

1. Step 1: Write the proportion equation
   218,919 : 475,012.50 = 475,012.50 : x
2. Step 2: Convert to fraction form
   218,919/475,012.50 = 475,012.50/x
3. Step 3: Cross multiply
   218,919x = 475,012.50 × 475,012.50
4. Step 4: Simplify right side
   218,919x = 225,636,875,156.25
5. Step 5: Solve for x
   x = 225,636,875,156.25/218,919
6. Step 6: Final answer
   x = 1,030,686.58