Finding the Third Proportional to 103,889 and 222,178

Step by Step Solution

1. Step 1: Write the proportion equation
   103,889 : 222,178 = 222,178 : x
2. Step 2: Convert to fraction form
   103,889/222,178 = 222,178/x
3. Step 3: Cross multiply
   103,889x = 222,178 × 222,178
4. Step 4: Simplify right side
   103,889x = 49,363,063,684
5. Step 5: Solve for x
   x = 49,363,063,684/103,889
6. Step 6: Final answer
   x = 475,151.98