Finding the Third Proportional to 63,099 and 139,000

Step by Step Solution

1. Step 1: Write the proportion equation
   63,099 : 139,000 = 139,000 : x
2. Step 2: Convert to fraction form
   63,099/139,000 = 139,000/x
3. Step 3: Cross multiply
   63,099x = 139,000 × 139,000
4. Step 4: Simplify right side
   63,099x = 19,321,000,000
5. Step 5: Solve for x
   x = 19,321,000,000/63,099
6. Step 6: Final answer
   x = 306,201.37