Finding the Third Proportional to 216,780 and 472,764

Step by Step Solution

1. Step 1: Write the proportion equation
   216,780 : 472,764 = 472,764 : x
2. Step 2: Convert to fraction form
   216,780/472,764 = 472,764/x
3. Step 3: Cross multiply
   216,780x = 472,764 × 472,764
4. Step 4: Simplify right side
   216,780x = 223,505,799,696
5. Step 5: Solve for x
   x = 223,505,799,696/216,780
6. Step 6: Final answer
   x = 1,031,025.92