Finding the Third Proportional to 222,990 and 480,972

Step by Step Solution

1. Step 1: Write the proportion equation
   222,990 : 480,972 = 480,972 : x
2. Step 2: Convert to fraction form
   222,990/480,972 = 480,972/x
3. Step 3: Cross multiply
   222,990x = 480,972 × 480,972
4. Step 4: Simplify right side
   222,990x = 231,334,064,784
5. Step 5: Solve for x
   x = 231,334,064,784/222,990
6. Step 6: Final answer
   x = 1,037,419.01