Finding the Third Proportional to 217,821 and 469,012.50

Step by Step Solution

1. Step 1: Write the proportion equation
   217,821 : 469,012.50 = 469,012.50 : x
2. Step 2: Convert to fraction form
   217,821/469,012.50 = 469,012.50/x
3. Step 3: Cross multiply
   217,821x = 469,012.50 × 469,012.50
4. Step 4: Simplify right side
   217,821x = 219,972,725,156.25
5. Step 5: Solve for x
   x = 219,972,725,156.25/217,821
6. Step 6: Final answer
   x = 1,009,878.41