Finding the Third Proportional to 63,222 and 139,172

Step by Step Solution

1. Step 1: Write the proportion equation
   63,222 : 139,172 = 139,172 : x
2. Step 2: Convert to fraction form
   63,222/139,172 = 139,172/x
3. Step 3: Cross multiply
   63,222x = 139,172 × 139,172
4. Step 4: Simplify right side
   63,222x = 19,368,845,584
5. Step 5: Solve for x
   x = 19,368,845,584/63,222
6. Step 6: Final answer
   x = 306,362.43