Finding the Third Proportional to 215,389.88 and 469,947

Step by Step Solution

1. Step 1: Write the proportion equation
   215,389.88 : 469,947 = 469,947 : x
2. Step 2: Convert to fraction form
   215,389.88/469,947 = 469,947/x
3. Step 3: Cross multiply
   215,389.88x = 469,947 × 469,947
4. Step 4: Simplify right side
   215,389.88x = 220,850,182,809
5. Step 5: Solve for x
   x = 220,850,182,809/215,389.88
6. Step 6: Final answer
   x = 1,025,350.81