Finding the Third Proportional to 92,199.50 and 139,147

Step by Step Solution

1. Step 1: Write the proportion equation
   92,199.50 : 139,147 = 139,147 : x
2. Step 2: Convert to fraction form
   92,199.50/139,147 = 139,147/x
3. Step 3: Cross multiply
   92,199.50x = 139,147 × 139,147
4. Step 4: Simplify right side
   92,199.50x = 19,361,887,609
5. Step 5: Solve for x
   x = 19,361,887,609/92,199.50
6. Step 6: Final answer
   x = 209,999.92